I hope that when people say "color", they mean only color, and not adding a lot of other features, because, you know, PocketCHIP at $69 is there, comes with Pico-8, and it'll enter in direct competition with it.
I love Arduboy as a gadget. Its size is great. And it's good for playing a game here and there.
Color would be nice, but please, keep it mostly as it is. Greyscale would be nice too, if color is too complicated/demanding.
But don't turn Arduboy into something else!