good light sources: plant day-glo light bulbs (for plants and reptiles) or just tip your toaster on its side and turn it on(works but don't recommend it!!!), or use "hot-lights" (no not the expensive studio hot lights) the cheap $10 halogen work lights you buy at Kmart, I myself play with active light sources instead of a flash, saves me some guess work and is much more fun...(posted 8621 days ago)"sit your partner in front of the stove! turn it on and watch it glow!"
Jason