I personally would not colour code as they then look (just my opinion) and personally I think they look better on Red/Dragon Green type cars. Darker cars just look like they came with the lights anyway whereas a different colour they look like an addition. May sound strange but that's just my view
agree to a point with all posts,but I have flash red,and colour coded,IMO they don't look , they suit, think black on red don't suit,look HALFRAUDS styley!