recognize #hex and rgb/hsl colors

Author: rotu

types/three/src/utils.d.ts

@@ -1,3 +1,6 @@
 import { Color, ColorKeyword } from './math/Color';
 
-export type ColorRepresentation = Color | ColorKeyword | number;
+export type StyleColorString = `${'rgb' | 'hsl'}(${string})`;
+export type HexColorString = `#${string & { length: 3 | 6 }}`;
+
+export type ColorRepresentation = Color | ColorKeyword | StyleColorString | HexColorString | number;