disc brake dust shields

if you can get it done cheap, powdercoat is probably the best option.

the shields see a ton abuse so the options are: use something that'll hopefully stand up for a long time (powdercoat) or use something that's easy to touch up (paint).

if PC is too $$ on it, then i'd go with engine paint or castblast aluminum (if that's the color you're looking for). both are pretty tough and should hold up well as long as you don't work at a cement factory.