Add color-adjust-1.vim

See also: https://www.w3.org/TR/2019/WD-css-color-adjust-1-20190521/

Author: hail2u

after/syntax/css/color-4.vim

@@ -1,3 +1,2 @@
-syn match cssColorProp contained "\<color-adjust\>"
 syn region cssFunction contained matchgroup=cssFunctionName start="\<\(hwb\|lab\|lch\|gray\|color\|device-cmyk\=\)\s*(" end=")" oneline keepend
 syn match cssFontDescriptor "@color-profile\>" nextgroup=cssFontDescriptorBlock skipwhite skipnl

after/syntax/css/color-adjust.vim

@@ -0,0 +1,3 @@
+syn match cssColorProp contained "\<\(forced-\)\=color-adjust\>"
+syn match cssColorProp contained "\<color-scheme\>"
+syn keyword cssFontAttr contained only economy exact

test/test.css

@@ -88,7 +88,6 @@
 }
 
 .color-4 {
-  color-adjust: auto;
   display: hwb(120deg, 44%, 50%);
   display: lab(1 2 3);
   display: lch(4 5 6);
@@ -101,6 +100,15 @@
   src: url("http://example.org/swop-coated.icc");
 }
 
+.color-adjust-1 {
+  color-scheme: auto;
+  forced-color-adjust: auto;
+  color-adjust: auto;
+  display: only;
+  display: economy;
+  display: exact;
+}
+
 .compositing-1 {
   mix-blend-mode: auto;
   isolation: auto;