This is slightly off-topic to the standard DIY speaker builds, but hopefully you will have some insight.
I have two pair of Peavey 1545M wedge stage monitors. They are a pretty simple design (two way speakers, a titanium horn and 15" woofer, crossed over at around 2500 Hz). Unfortunately, the horns on one pair are black, and the horns on the other pair are white.
I am anal retentive enough that this is making me nuts (I think my stage looks bad, and since I only run sound, I want the musicians playing to be as happy as the people listening to the music). As these horns are easily separated from the drivers, would it be a bad thing to hit them with some paint to get the white horns black, and all the speakers would match in their look? Would this do any damage to the horns?