I just finished off my set... The ones on ebay they left the area entirely reflective but i chose to follow the outer lines, painting those black and leaving the rest reflective. Looks pretty nice but be careful with the tape, I messed up a couple of times, looks hella clean from a distance but up close you can see the mistakes... I wouldn't suggest painting entirely black bc as you said the signal bulbs need to reflect. I'll post pics some day in the near future.