theres a DIY on this. some people get em professionally done, but most just spraypaint em. the DIY will tell you how.
as fpr colors.. black white or gunmetal will work. balck and gunmetal are done quite often and usually look good. white would prob look good on your white tib. and you could always give it a diff color lip if you want. like white w/ black lip, or black with silver lip.