CZ-82 sights

A while back, I got a Czech police surplus CZ-82. There is quite a lot of wear on it, but that's not important for this. I notice that the sights have little dimples in the rear and a shallow channel in the front and was wondering if there was some kind of glow in the dark material in them, or if it was just a bright paint? If it was glow in the dark, is there any way to get it replaced?

When presented with that opportunity, I always fill the rears with bright-white, and the front with day-glow orange. Both my CZ82s, and other handguns, have that combination.