I did mine in subtle blue hue and they look good, not tacky at all, plus it protects your calipers from roting, calipers are really in the firing line for salt etc. Was doing new pads and disc at time, so my calipers were off, although I did it without detaching flexi. I used spray brake cleaner, and a 250ml tine of enginer laquer. £7 (did it on impulse and they didnt have proper caliper paint at shop)and it still ooks fine ages after doing. Helps if you have large open wheels, as you can give the calipers a wee clean, every time you wash the car, that makes any paint last a lot longer.
Alex M