Get NVGs, then you'll see your sights AND what you're shooting at :P
Barring that, install a taclight on your gun and learn how to use it effectively. Same idea as above, how can you effectively and safely shoot at something if you can't even see your own sights?
Most commercial glow-in-the-dark stuff is pure crap; you'll be shining a flashlight on 'em every 5 minutes to recharge them. There's some high end glow-in-the-dark paints for firearms and other professional applications, it's pricey and requires lengthy (~20 mins+) charging with a UV light source, but they'll glow usably for a couple of hours.