diff --git a/docs/how-to-guides/themes/theme-json.md b/docs/how-to-guides/themes/theme-json.md
index e96c4a5c4ac94d..6f71290eaf63a3 100644
--- a/docs/how-to-guides/themes/theme-json.md
+++ b/docs/how-to-guides/themes/theme-json.md
@@ -587,6 +587,46 @@ Note that the name of the variable is created by adding `--` in between each nes
 
 #### Settings examples
 
+- Enable a specifc colour for a nested block, from the color palette:
+
+```json
+{
+	"version": 2,
+	"settings": {
+		"color": {
+			"palette": [
+				{
+					"slug": "red",
+					"name": "Red",
+					"color": "#ce0808"
+				},
+				{
+					"slug": "light",
+					"name": "Light",
+					"color": "#f5f7f9"
+				}
+			]
+		},
+		"blocks": {
+			"core/quote": {
+				"core/heading": {
+					"color": {
+						"text": true,
+						"palette": [
+							{
+								"slug": "red",
+								"name": "Red",
+								"color": "#ce0808"
+							}
+						]
+					}
+				}
+			}
+		}
+	}
+}
+```
+
 - Enable custom colors only for the paragraph block:
 
 ```json
diff --git a/docs/reference-guides/theme-json-reference/theme-json-living.md b/docs/reference-guides/theme-json-reference/theme-json-living.md
index 0096a41be04baf..061c1db655729c 100644
--- a/docs/reference-guides/theme-json-reference/theme-json-living.md
+++ b/docs/reference-guides/theme-json-reference/theme-json-living.md
@@ -139,10 +139,10 @@ Border styles.
 | radius | undefined |  |
 | style | string |  |
 | width | string |  |
-| top | undefined |  |
-| right | undefined |  |
-| bottom | undefined |  |
-| left | undefined |  |
+| top | object | color, style, width |
+| right | object | color, style, width |
+| bottom | object | color, style, width |
+| left | object | color, style, width |
 
 ---
 
diff --git a/schemas/json/theme.json b/schemas/json/theme.json
index 58cfe1ea001f08..01cb1503fc3b97 100644
--- a/schemas/json/theme.json
+++ b/schemas/json/theme.json
@@ -8,6 +8,7 @@
 			"reference": "https://developer.wordpress.org/block-editor/how-to-guides/themes/theme-json/"
 		},
 		"settingsPropertiesAppearanceTools": {
+			"type": "object",
 			"properties": {
 				"appearanceTools": {
 					"description": "Setting that enables the following UI tools:\n\n- border: color, radius, style, width\n- color: link\n- spacing: blockGap, margin, padding\n- typography: lineHeight",
@@ -26,6 +27,7 @@
 			}
 		},
 		"settingsPropertiesBorder": {
+			"type": "object",
 			"properties": {
 				"border": {
 					"description": "Settings related to borders.",
@@ -57,6 +59,7 @@
 			}
 		},
 		"settingsPropertiesColor": {
+			"type": "object",
 			"properties": {
 				"color": {
 					"description": "Settings related to colors.",
@@ -186,6 +189,7 @@
 			}
 		},
 		"settingsPropertiesLayout": {
+			"type": "object",
 			"properties": {
 				"layout": {
 					"description": "Settings related to layout.",
@@ -205,6 +209,7 @@
 			}
 		},
 		"settingsPropertiesSpacing": {
+			"type": "object",
 			"properties": {
 				"spacing": {
 					"description": "Settings related to spacing.",
@@ -305,6 +310,7 @@
 			}
 		},
 		"settingsPropertiesTypography": {
+			"type": "object",
 			"properties": {
 				"typography": {
 					"description": "Settings related to typography.",
@@ -374,18 +380,25 @@
 									},
 									"fluid": {
 										"description": "Specifics the minimum and maximum font size value of a fluid font size. Set to `false` to bypass fluid calculations and use the static `size` value.",
-										"type": [ "object", "boolean" ],
-										"properties": {
-											"min": {
-												"description": "A min font size for fluid font size calculations in px, rem or em.",
-												"type": "string"
+										"oneOf": [
+											{
+												"type": "object",
+												"properties": {
+													"min": {
+														"description": "A min font size for fluid font size calculations in px, rem or em.",
+														"type": "string"
+													},
+													"max": {
+														"description": "A max font size for fluid font size calculations in px, rem or em.",
+														"type": "string"
+													}
+												},
+												"additionalProperties": false
 											},
-											"max": {
-												"description": "A max font size for fluid font size calculations in px, rem or em.",
-												"type": "string"
+											{
+												"type": "boolean"
 											}
-										},
-										"additionalProperties": false
+										]
 									}
 								},
 								"additionalProperties": false
@@ -427,7 +440,6 @@
 												},
 												"fontWeight": {
 													"description": "List of available font weights, separated by a space.",
-													"type": "string",
 													"default": "400",
 													"oneOf": [
 														{
@@ -515,6 +527,7 @@
 			}
 		},
 		"settingsPropertiesCustom": {
+			"type": "object",
 			"properties": {
 				"custom": {
 					"description": "Generate custom CSS custom properties of the form `--wp--custom--{key}--{nested-key}: {value};`. `camelCased` keys are transformed to `kebab-case` as to follow the CSS property naming schema. Keys at different depth levels are separated by `--`, so keys should not include `--` in the name.",
@@ -553,10 +566,11 @@
 				}
 			]
 		},
-		"settingsBlocksPropertiesComplete": {
+		"settingsBlocksProperties": {
 			"type": "object",
 			"properties": {
 				"core/archives": {
+					"type": "object",
 					"description": "Archive block. Display a monthly archive of your posts. This block has no block-level settings",
 					"additionalProperties": false
 				},
@@ -567,14 +581,16 @@
 					"$ref": "#/definitions/settingsPropertiesComplete"
 				},
 				"core/block": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/button": {
+					"type": "object",
 					"allOf": [
 						{
 							"$ref": "#/definitions/settingsPropertiesAppearanceTools"
 						},
 						{
+							"type": "object",
 							"properties": {
 								"border": {
 									"description": "Settings related to borders.\nGutenberg plugin required.",
@@ -589,17 +605,25 @@
 								}
 							}
 						},
-						{ "$ref": "#/definitions/settingsPropertiesColor" },
-						{ "$ref": "#/definitions/settingsPropertiesLayout" },
-						{ "$ref": "#/definitions/settingsPropertiesSpacing" },
+						{
+							"$ref": "#/definitions/settingsPropertiesColor"
+						},
+						{
+							"$ref": "#/definitions/settingsPropertiesLayout"
+						},
+						{
+							"$ref": "#/definitions/settingsPropertiesSpacing"
+						},
 						{
 							"$ref": "#/definitions/settingsPropertiesTypography"
 						},
-						{ "$ref": "#/definitions/settingsPropertiesCustom" }
+						{
+							"$ref": "#/definitions/settingsPropertiesCustom"
+						}
 					]
 				},
 				"core/buttons": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/calendar": {
 					"$ref": "#/definitions/settingsPropertiesComplete"
@@ -611,10 +635,10 @@
 					"$ref": "#/definitions/settingsPropertiesComplete"
 				},
 				"core/column": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/columns": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/comment-author-name": {
 					"$ref": "#/definitions/settingsPropertiesComplete"
@@ -632,13 +656,13 @@
 					"$ref": "#/definitions/settingsPropertiesComplete"
 				},
 				"core/comment-template": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/comments": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/cover": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/embed": {
 					"$ref": "#/definitions/settingsPropertiesComplete"
@@ -650,16 +674,16 @@
 					"$ref": "#/definitions/settingsPropertiesComplete"
 				},
 				"core/gallery": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/group": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/heading": {
 					"$ref": "#/definitions/settingsPropertiesComplete"
 				},
 				"core/home-link": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/html": {
 					"$ref": "#/definitions/settingsPropertiesComplete"
@@ -674,13 +698,13 @@
 					"$ref": "#/definitions/settingsPropertiesComplete"
 				},
 				"core/list": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/loginout": {
 					"$ref": "#/definitions/settingsPropertiesComplete"
 				},
 				"core/media-text": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/missing": {
 					"$ref": "#/definitions/settingsPropertiesComplete"
@@ -689,10 +713,10 @@
 					"$ref": "#/definitions/settingsPropertiesComplete"
 				},
 				"core/navigation": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/navigation-link": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/nextpage": {
 					"$ref": "#/definitions/settingsPropertiesComplete"
@@ -707,19 +731,19 @@
 					"$ref": "#/definitions/settingsPropertiesComplete"
 				},
 				"core/post-comments": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/post-comments-count": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/post-comments-form": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/post-comments-link": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/post-content": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/post-date": {
 					"$ref": "#/definitions/settingsPropertiesComplete"
@@ -734,7 +758,7 @@
 					"$ref": "#/definitions/settingsPropertiesComplete"
 				},
 				"core/post-template": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/post-terms": {
 					"$ref": "#/definitions/settingsPropertiesComplete"
@@ -749,25 +773,25 @@
 					"$ref": "#/definitions/settingsPropertiesComplete"
 				},
 				"core/query": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/query-pagination": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/query-pagination-next": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/query-pagination-numbers": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/query-pagination-previous": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/query-title": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/quote": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/rss": {
 					"$ref": "#/definitions/settingsPropertiesComplete"
@@ -794,7 +818,7 @@
 					"$ref": "#/definitions/settingsPropertiesComplete"
 				},
 				"core/social-links": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/spacer": {
 					"$ref": "#/definitions/settingsPropertiesComplete"
@@ -809,7 +833,7 @@
 					"$ref": "#/definitions/settingsPropertiesComplete"
 				},
 				"core/template-part": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				},
 				"core/term-description": {
 					"$ref": "#/definitions/settingsPropertiesComplete"
@@ -835,10 +859,222 @@
 			},
 			"patternProperties": {
 				"^[a-z][a-z0-9-]*/[a-z][a-z0-9-]*$": {
-					"$ref": "#/definitions/settingsPropertiesComplete"
+					"$ref": "#/definitions/settingsNestedPropertiesComplete"
 				}
-			},
-			"additionalProperties": false
+			}
+		},
+		"settingsBlocksPropertiesComplete": {
+			"type": "object",
+			"allOf": [
+				{
+					"$ref": "#/definitions/settingsBlocksProperties"
+				},
+				{
+					"properties": {
+						"core/archives": {},
+						"core/audio": {},
+						"core/avatar": {},
+						"core/block": {},
+						"core/button": {},
+						"core/buttons": {},
+						"core/calendar": {},
+						"core/categories": {},
+						"core/code": {},
+						"core/column": {},
+						"core/columns": {},
+						"core/comment-author-name": {},
+						"core/comment-content": {},
+						"core/comment-date": {},
+						"core/comment-edit-link": {},
+						"core/comment-reply-link": {},
+						"core/comment-template": {},
+						"core/comments": {},
+						"core/cover": {},
+						"core/embed": {},
+						"core/file": {},
+						"core/freeform": {},
+						"core/gallery": {},
+						"core/group": {},
+						"core/heading": {},
+						"core/home-link": {},
+						"core/html": {},
+						"core/image": {},
+						"core/latest-comments": {},
+						"core/latest-posts": {},
+						"core/list": {},
+						"core/loginout": {},
+						"core/media-text": {},
+						"core/missing": {},
+						"core/more": {},
+						"core/navigation": {},
+						"core/navigation-link": {},
+						"core/nextpage": {},
+						"core/page-list": {},
+						"core/paragraph": {},
+						"core/post-author": {},
+						"core/post-comments": {},
+						"core/post-comments-count": {},
+						"core/post-comments-form": {},
+						"core/post-comments-link": {},
+						"core/post-content": {},
+						"core/post-date": {},
+						"core/post-excerpt": {},
+						"core/post-featured-image": {},
+						"core/post-navigation-link": {},
+						"core/post-template": {},
+						"core/post-terms": {},
+						"core/post-title": {},
+						"core/preformatted": {},
+						"core/pullquote": {},
+						"core/query": {},
+						"core/query-pagination": {},
+						"core/query-pagination-next": {},
+						"core/query-pagination-numbers": {},
+						"core/query-pagination-previous": {},
+						"core/query-title": {},
+						"core/quote": {},
+						"core/rss": {},
+						"core/search": {},
+						"core/separator": {},
+						"core/shortcode": {},
+						"core/site-logo": {},
+						"core/site-tagline": {},
+						"core/site-title": {},
+						"core/social-link": {},
+						"core/social-links": {},
+						"core/spacer": {},
+						"core/table": {},
+						"core/table-of-contents": {},
+						"core/tag-cloud": {},
+						"core/template-part": {},
+						"core/term-description": {},
+						"core/text-columns": {},
+						"core/verse": {},
+						"core/video": {},
+						"core/widget-area": {},
+						"core/legacy-widget": {},
+						"core/widget-group": {}
+					},
+					"patternProperties": {
+						"^[a-z][a-z0-9-]*/[a-z][a-z0-9-]*$": {
+							"$ref": "#/definitions/settingsPropertiesComplete"
+						}
+					},
+					"additionalProperties": false
+				}
+			]
+		},
+		"settingsNestedPropertiesComplete": {
+			"type": "object",
+			"allOf": [
+				{
+					"$ref": "#/definitions/settingsProperties"
+				},
+				{
+					"$ref": "#/definitions/settingsBlocksProperties"
+				},
+				{
+					"properties": {
+						"appearanceTools": {},
+						"border": {},
+						"color": {},
+						"layout": {},
+						"spacing": {},
+						"typography": {},
+						"custom": {},
+
+						"core/archives": {},
+						"core/audio": {},
+						"core/avatar": {},
+						"core/block": {},
+						"core/button": {},
+						"core/buttons": {},
+						"core/calendar": {},
+						"core/categories": {},
+						"core/code": {},
+						"core/column": {},
+						"core/columns": {},
+						"core/comment-author-name": {},
+						"core/comment-content": {},
+						"core/comment-date": {},
+						"core/comment-edit-link": {},
+						"core/comment-reply-link": {},
+						"core/comment-template": {},
+						"core/comments": {},
+						"core/cover": {},
+						"core/embed": {},
+						"core/file": {},
+						"core/freeform": {},
+						"core/gallery": {},
+						"core/group": {},
+						"core/heading": {},
+						"core/home-link": {},
+						"core/html": {},
+						"core/image": {},
+						"core/latest-comments": {},
+						"core/latest-posts": {},
+						"core/list": {},
+						"core/loginout": {},
+						"core/media-text": {},
+						"core/missing": {},
+						"core/more": {},
+						"core/navigation": {},
+						"core/navigation-link": {},
+						"core/nextpage": {},
+						"core/page-list": {},
+						"core/paragraph": {},
+						"core/post-author": {},
+						"core/post-comments": {},
+						"core/post-comments-count": {},
+						"core/post-comments-form": {},
+						"core/post-comments-link": {},
+						"core/post-content": {},
+						"core/post-date": {},
+						"core/post-excerpt": {},
+						"core/post-featured-image": {},
+						"core/post-navigation-link": {},
+						"core/post-template": {},
+						"core/post-terms": {},
+						"core/post-title": {},
+						"core/preformatted": {},
+						"core/pullquote": {},
+						"core/query": {},
+						"core/query-pagination": {},
+						"core/query-pagination-next": {},
+						"core/query-pagination-numbers": {},
+						"core/query-pagination-previous": {},
+						"core/query-title": {},
+						"core/quote": {},
+						"core/rss": {},
+						"core/search": {},
+						"core/separator": {},
+						"core/shortcode": {},
+						"core/site-logo": {},
+						"core/site-tagline": {},
+						"core/site-title": {},
+						"core/social-link": {},
+						"core/social-links": {},
+						"core/spacer": {},
+						"core/table": {},
+						"core/table-of-contents": {},
+						"core/tag-cloud": {},
+						"core/template-part": {},
+						"core/term-description": {},
+						"core/text-columns": {},
+						"core/verse": {},
+						"core/video": {},
+						"core/widget-area": {},
+						"core/legacy-widget": {},
+						"core/widget-group": {}
+					},
+					"patternProperties": {
+						"^[a-z][a-z0-9-]*/[a-z][a-z0-9-]*$": {
+							"$ref": "#/definitions/settingsPropertiesComplete"
+						}
+					},
+					"additionalProperties": false
+				}
+			]
 		},
 		"settingsCustomAdditionalProperties": {
 			"type": "object",
@@ -857,6 +1093,7 @@
 			}
 		},
 		"stylesProperties": {
+			"type": "object",
 			"properties": {
 				"border": {
 					"description": "Border styles.",
@@ -904,60 +1141,76 @@
 							"type": "string"
 						},
 						"top": {
-							"color": {
-								"description": "Sets the `border-top-color` CSS property.",
-								"type": "string"
-							},
-							"style": {
-								"description": "Sets the `border-top-style` CSS property.",
-								"type": "string"
+							"type": "object",
+							"properties": {
+								"color": {
+									"description": "Sets the `border-top-color` CSS property.",
+									"type": "string"
+								},
+								"style": {
+									"description": "Sets the `border-top-style` CSS property.",
+									"type": "string"
+								},
+								"width": {
+									"description": "Sets the `border-top-width` CSS property.",
+									"type": "string"
+								}
 							},
-							"width": {
-								"description": "Sets the `border-top-width` CSS property.",
-								"type": "string"
-							}
+							"additionalProperties": false
 						},
 						"right": {
-							"color": {
-								"description": "Sets the `border-right-color` CSS property.",
-								"type": "string"
-							},
-							"style": {
-								"description": "Sets the `border-right-style` CSS property.",
-								"type": "string"
+							"type": "object",
+							"properties": {
+								"color": {
+									"description": "Sets the `border-right-color` CSS property.",
+									"type": "string"
+								},
+								"style": {
+									"description": "Sets the `border-right-style` CSS property.",
+									"type": "string"
+								},
+								"width": {
+									"description": "Sets the `border-right-width` CSS property.",
+									"type": "string"
+								}
 							},
-							"width": {
-								"description": "Sets the `border-right-width` CSS property.",
-								"type": "string"
-							}
+							"additionalProperties": false
 						},
 						"bottom": {
-							"color": {
-								"description": "Sets the `border-bottom-color` CSS property.",
-								"type": "string"
-							},
-							"style": {
-								"description": "Sets the `border-bottom-style` CSS property.",
-								"type": "string"
+							"type": "object",
+							"properties": {
+								"color": {
+									"description": "Sets the `border-bottom-color` CSS property.",
+									"type": "string"
+								},
+								"style": {
+									"description": "Sets the `border-bottom-style` CSS property.",
+									"type": "string"
+								},
+								"width": {
+									"description": "Sets the `border-bottom-width` CSS property.",
+									"type": "string"
+								}
 							},
-							"width": {
-								"description": "Sets the `border-bottom-width` CSS property.",
-								"type": "string"
-							}
+							"additionalProperties": false
 						},
 						"left": {
-							"color": {
-								"description": "Sets the `border-left-color` CSS property.",
-								"type": "string"
-							},
-							"style": {
-								"description": "Sets the `border-left-style` CSS property.",
-								"type": "string"
+							"type": "object",
+							"properties": {
+								"color": {
+									"description": "Sets the `border-left-color` CSS property.",
+									"type": "string"
+								},
+								"style": {
+									"description": "Sets the `border-left-style` CSS property.",
+									"type": "string"
+								},
+								"width": {
+									"description": "Sets the `border-left-width` CSS property.",
+									"type": "string"
+								}
 							},
-							"width": {
-								"description": "Sets the `border-left-width` CSS property.",
-								"type": "string"
-							}
+							"additionalProperties": false
 						}
 					},
 					"additionalProperties": false
diff --git a/test/integration/theme-schema.test.js b/test/integration/theme-schema.test.js
new file mode 100644
index 00000000000000..e721e5eca05e46
--- /dev/null
+++ b/test/integration/theme-schema.test.js
@@ -0,0 +1,23 @@
+/**
+ * External dependencies
+ */
+import Ajv from 'ajv-draft-04';
+
+/**
+ * Internal dependencies
+ */
+import themeSchema from '../../schemas/json/theme.json';
+
+describe( 'theme.json schema', () => {
+	const ajv = new Ajv( {
+		// Used for matching unknown blocks without repeating core blocks names
+		// with patternProperties in settings.blocks and settings.styles
+		allowMatchingProperties: true,
+	} );
+
+	it( 'compiles in strict mode', async () => {
+		const result = ajv.compile( themeSchema );
+
+		expect( result.errors ).toBe( null );
+	} );
+} );