IMHO I like subtle clean calipers. so I normally opt for either silver, or a gloss black unless I have an upgraded set up.
The best way I have always done mine were to use a High temp paint VHT is pretty good. I use a water color brush (cheap is fine) and a dixie cup or plastic cup. Once you have scrubbed, and prepped (brakkleen) is good for this too as it evaporates)
Then, take the spray paint and spray it into the cup, then use the brush to paint on. It allows the natural clearcoat in the spray paint to mix well and will last longer
Best part is you have total control over the paint, and there is
NO masking involved. Touch ups are easy as well if you do get a chip in the paint.
I have done about 30 different sets of brakes like this withh 100% good results