Appliance colors go in and out of fashion, just like....well, fashion. The candy colors of the late 1950's and early 1960's were all the rage, but once they were replaced with avocado, harvest gold, coppertone, the once-favored candy colors (yellow, pink, turquoise, etc.) were derided. By the early 1980's, almond reigned as the great new color; later, black was fashionable. Currently, we're in a stainless steel-or-white mode.
While I think stainless steel and white are classics, perhaps we'll see a return of the candy colors or the Mediterranean triumvirate (avocado/gold/coppertone)?