Several hair styles have accessories(head bands, bandanas, clips, flowers, etc...) that can be colored while in character creation. I typically avoid any of the ones that have prominent pieces, because we are limited to using the starter dye colors in the CC, and you are basically stuck with the choice once you enter the world. I'd love it if Anet let us dye these pieces after character creation, so we can keep them matching our outfits as we unlock new dyes. If letting us re-dye them is too much work, maybe they could make it match your currently equipped headgear's color?