Roger's right about the black calipers, they would do nothing for the look. But I'm torn between the red and the blue. I had red for the longest time and I think it looked really good, but I also had chrome rims. I recently got new rims (Rev X in gunmetal) and the red calipers just didn't look right so this weekend I painted them silver. I think it'll look just fine, hopefully not boring. Course my ride is Tropic Green too. It's really hard to picture (for me) but I think I'd do them in blue, maybe a bit darker or lighter for some contrast. How bout the same blue as .................. Roger's?
