Probably a couple hundred to anodize them. Maybe less since it's one color and they shouldn't need any finishing like polishing or bead blasting. But to anodize them you need to totally disassemble the forks. The process involves an acid bath. Good news is that if you do 'hard' ano it makes the surface hardness of the aluminum a good bit
Thanks for the advice, definitely something to look in to. Gonna try the vinyl for now. Less permanent, ya know...