== should format colors for properties and custom properties ==
div {
  prop:  rgba(255,255,255,.4);
  prop: oklch(70% 0.1 9);
  prop: #eee;
  prop: #e3e4e5;
   --custom1:  rgba(255,255,255,.4);
  --custom2: oklch(70% 0.1  9);
  --custom3: #eee;
  --custom4: #e3e4e5;
}

[expect]
div {
    prop: rgba(255, 255, 255, .4);
    prop: oklch(70% 0.1 9);
    prop: #eee;
    prop: #e3e4e5;
    --custom1: rgba(255, 255, 255, .4);
    --custom2: oklch(70% 0.1 9);
    --custom3: #eee;
    --custom4: #e3e4e5;
}