I love this idea and i agree with Karloff's suggestions too -- the pink kitty for spring came to my mind also. Your pics from Tad Carlucci's build-a-cat really bring this idea to life "This kitty curls my whiskers!"
I like the Bali Flame for summer, very much.
Other pale pastel kitties that might be sweet for spring -- Aby Fawn, Pandie Fawn? That peach color is so ... well, yummy, spring-like.
and i agree with Karloff's suggestions too -- the pink kitty for spring came to my mind also. Your pics from Tad Carlucci's build-a-cat really bring this idea to life 
