I agree these should be chrome-deleted from the factory. I have my truck currently debaged, just waiting for one more custom black and red emblem. I have custom black/red AT4X emblems for the sides and lower right back of the tailgate. A red with black trimming "GMC" emblem to replace the chrome/red GMC emblem in the middle of the upper tailgate, and finally a black/red "SIERRA" emblem for the lower left of the tailgate. Just waiting the last one to arrive before I install them all.
I do plan on plasti-dipping in black the outside of the "GMC" emblem in the front grille. May also plati-dip the small "AT4X" on the lower left on the front. Just don't like the chrome look. This has cost me about $175 in new custom emblems, but I think will be worth it. Plus with my partially wrapped in black truck, will match MUCH better.