Aion,
it just seems to me that if you go to the trouble to make a polymer frame, why not squeeze out all the possibilities? I am thinking a zebra-striped frame would be ultra cool, and especially with colors other than black and white.
The point above about tactical colors is valid, but then again, the "pink fluffy" point is too.
My wife helps me determine many of my experimental load combos. Brass or nickel shells. Brass or nickel primers. gold, silver, copper or lead bullets. She even has an opinion about the color of the lube used on cast bullets. And when I showed her the colored "dots" in the alliant dot powders, she had strong feelings about this as well.
And you know what? Call it coincidence, but the combos she likes tend to do better than the ones she doesn't, for load velocity deviation.