diff --git a/config.schema.json b/config.schema.json
index e7d062b..dbe05fb 100644
--- a/config.schema.json
+++ b/config.schema.json
@@ -1,51 +1,72 @@
 {
   "$schema": "https://json-schema.org/draft/2020-12/schema",
-  "$id": "https://raw.githubusercontent.com/kashalls/kromgo/main/config.schema.json",
-  "additionalProperties": false,
-  "description": "kromgo configuration file",
-  "properties": {
-    "debug": {
-      "type": "boolean"
-    },
-    "metrics": {
-      "type": "array",
-      "items": {
-        "type": "object",
-        "properties": {
-          "name": {
-            "type": "string"
-          },
-          "query": {
-            "type": "string"
-          },
-          "prefix": {
-            "type": "string"
-          },
-          "suffix": {
-            "type": "string"
+  "$ref": "#/$defs/Config",
+  "$defs": {
+    "Config": {
+      "properties": {
+        "debug": {
+          "type": "boolean"
+        },
+        "metrics": {
+          "items": {
+            "$ref": "#/$defs/Metric"
           },
-          "colors": {
-            "type": "array",
-            "items": {
-              "type": "object",
-              "properties": {
-                "color": {
-                  "type": "string"
-                },
-                "min": {
-                  "type": "integer"
-                },
-                "max": {
-                  "type": "integer"
-                }
-              },
-              "required": ["color", "min", "max"]
-            }
-          }
+          "type": "array"
+        }
+      },
+      "additionalProperties": false,
+      "type": "object",
+      "required": [
+        "metrics"
+      ]
+    },
+    "Metric": {
+      "properties": {
+        "name": {
+          "type": "string"
         },
-        "required": ["name", "query"]
-      }
+        "query": {
+          "type": "string"
+        },
+        "prefix": {
+          "type": "string"
+        },
+        "suffix": {
+          "type": "string"
+        },
+        "colors": {
+          "items": {
+            "$ref": "#/$defs/MetricColor"
+          },
+          "type": "array"
+        }
+      },
+      "additionalProperties": false,
+      "type": "object",
+      "required": [
+        "name",
+        "query"
+      ]
     },
-    "required": ["metrics"]
+    "MetricColor": {
+      "properties": {
+        "color": {
+          "type": "string"
+        },
+        "min": {
+          "type": "number"
+        },
+        "max": {
+          "type": "number"
+        }
+      },
+      "additionalProperties": false,
+      "type": "object",
+      "required": [
+        "color",
+        "min",
+        "max"
+      ]
+    }
   }
 }