My FX is Black Obsidian and I had my bumpers re-painted. In doing so, I asked the bodyshop to just paint over the reflectors. It looks awesome. I will be posting many pics of my mods after my springs go in today, stay tuned.
Who really is going to know, when following you, that those strips should reflect light. I dont think any police will ever think, "hey, those should be reflectors, I will pull this guy over." Chances are slim of that ever happening. So, my advice, do whatever you want to them.