GlowBrights are Thinking Puttys that glow in the dark. There may not be much proof that dragons ever existed, but they have intrigued civilizations for centuries. Discover why with Dragon Scales Thinking Putty. Like a gleaming coat of reptilian armor, it shines with purple, gold, green black, and silver glitter and glows a magical green in the dark. Shape the putty into an egg, expose the bottom of the egg to light and turn out the lights to see a glowing baby dragon!