You could go with white to go with the wheels or black to go with bodywork and contrast wheels.
How To: Did mine recently
You will need to take the wheel off to get best results.
Get your hands on a wire brush that can be fitted to a hand drill. This is used to remove rust/corrosion/ dirt etc...
Once all dirt has been been rid of wipe them down to remove the little particles of rust, metal etc...
Now, use masking tape and tape around the bits you dont want paint on. e.g. brake disc.
Now the paint:
You must use high temp paint for obvious reasons.
I got the paint from halfords for £5.99 and was enough to do about 8 if you wanted to.
Just give the caliper around 3 coats of the stuff ( its quite thick ).
I gave mine about 1 hour drying time in between each coat, (was sunny day).
All in all should be around 4 hours total time for one at a time or 5 hours if you do both at same time.
Hope this helps.
Evoss
I would recomend getting bigger wheels aswell with lower profile tyers for a better look.