You have inspired me. I was going to repaint my 454 the standard black, but instead decided to be different. My choice: chrome with black grips. Pictures will be added as soon as I finish.
This is my Crosman 1600, soon to be a 454 once I add the adjustable rear sight. I painted it Rustoleum chrome with flat black grips. I have not fired since I reassembled it, but I did polish the bb feed rails so hopefully that will not be a problem.