Go on. Polished crank arms and the rings, bolts or crank cap can be the ano of your choice.
I think cranks are about the hardest,given its a big purchase and youre stuck with it, so if a next build is a different colour, it means another new crank. That is if you can find one.
Whereas cranks with polished arms are effectively neutral.
I was running 2x9 but i stuck a purple granny on there just to keep the flow of the colours. A few ounces extra weight but it does lots for the aesthetics
Seller karma'd me this so now I will go with a black headset otherwise I'll be twitching. Will this be odd with silver seatpost? I have a scabby black one as well that I can try for the look.