I had also thought of this the other day. Here are my color options:
Red=strawberries
Yellow=onion
Orange=oranges
Light Green=Cabbage
Dark Green=Broccoli
Blue=Whortleberries
Purple=Plums
Interesting features, though it would be a compeltely new part of Glitch, and to be honest of the entire game. Would take a lot of work to make furniture MUCH MORE customizable, for example colors, self keys, etc. Dying is simple enough, but the feature of what to use these would be so much more complicated. Being able to choose colors, fiber, dyes, materials specific for your furniture, different options and ways to go, etc.
Definitely something I'd like to see in the far future. But let's see Glitch get relaunched first :)