Feature Request: Color Token Deduplication and Aliasing

[james-bash]

Currently, the exporter generates a new Color constant for every color token, even when multiple tokens share the same color value. This leads to duplicate Color instances in the generated Dart code.

Suggestion:
Introduce a deduplication mechanism so that if two or more color tokens have the same value, subsequent tokens are declared as aliases to the first constant. For example:
static const Color colorNeutralBlack1000 = Color(0xff040404);
and then:
static const Color backgroundAlwaysBlack = colorNeutralBlack1000;

I believe it can be done in the tailwind exporter, possible to do it for flutter?