Doing my front rotors and brakes

I'm gonna paint my calipers while everything is apart. I found a variety of caliper paints at a few stores but can't find one matching the spidertrax wheel spacers i put in (almost speedway blue)

What other colors do you guys think would look good? My truck is silver and my rims are black, may seem like a dumb question but i tend to do things on impulse and was gonna do them red.. i want something that will stand out and thought doing them silver was pointless cause they are grey now and i hate em