Instead of painting the chrome, just buy the factory black pieces and swap them outz or see if there is someone local that has black parts but wants chrome.This is nice! You did a great job and inspired me. I really do like the truck a bunch. It has just about everything I "really" need.. minus the look which like you, I think I can modify. Waiting on the grill and fender to start with. I will also look at painting some chrome. What did you use to match the black as it looks really spot on. I usually go matte black just due to I like the look but also due to never being able to match it.
Another option would be a black vinyl wrap. Will hold up better than paint and won't chip as easy showing the chrome.
Personally not a fan of the "TRX" style grill, because it doesn't really give the look, and if everything else is still chrome will look even worse.