The idea isn't mine, and I can't remember who said it at an auction I was attending, but since I don't see the suggestion here, I'll suggest it. I think nose color would be an awesome trait to introduce.
Hehe I like that idea and do think confetti's need some tweaks. This could be a nice start to tweaking them "Grins"
How about nose temperature as a secondary on the color kind of like eyes have two attributes? I much more desire a warm nose pestering me for breakfast at 5am than a cold one.