Any contrasting color is ok if it's a few items and not overdone.
But you get red suspension links, then red calipers ...then someone's gong to tell you to put on red door handles ...and then a red pumpkin color. Of course any recovery hooks would need to be red ...red shock boots and steering stabilizers too. Then the next thing you know one day it'll be [gulp!] ...tripple-blade wipers in ...you guessed it -- RED! Eventually it'll happen, you'll be walking out to your truck and realize it suddenly looks overdone.
Of course I'm joking, red (or another color) would be fine ...but you've done a tasteful job so far... use your best judgement. You could order them in black and put a band of red vinyl tape, with a band of chrome silver tape too ...around them. That way you get a hint of 'red' but not TOO much. To me that would look great. And you could add more red or take it off if you wanted to. I get the sense that's what worries you ...overdoing it too much.
