I think you should paint the grills black. My friend just did that to his truck grill (he has one just like yours) and it looks sick. I'm just not a fan of that style of grill. But hey, it's your car man! Do what ever makes you happy driving it!
I think you should tint the side markers for sure. If you don't want to go the whole tinting route, if you just get clear ones, it will look better than the stock amber ones.
Defintely blacken that grill. Not only will it cut down from the Mac-truck appeal, but it'll tie in with the headlights and the body a little better. Here. I made a quick-n-dirty photoshop just to give you an idea of what it would look like:
tint the sidemarkers, but with some film tint and not the niteshades spray paint (unless ur gonna clear coat it afterwards). but other than that do the blacked out grille idea, and ull thanks us for it.
[ffrocks] Nice job on the picts, the grill will look better with the ford in the center, but what ever you like on your ride its cool. at least its a focus not trying to sound bias or anything well maybe a little.