Has anyone painted the sights on their handgun? My CZ comes from the factory with the green "light charged" paint that glows faintly in the dark (for a few seconds anyway). I like the sights themselves and don't want to install new sights just yet. I'm thinking of getting some bright color oil paint and putting a tiny dab on the front and rear sights to cover the factory stuff. Has anyone done this and if so what was the result? Is there any particular color that is proven to be more visible? Orange/Green/Yellow/Red/Magenta?