How does puppygames do it?

Puppygames always have these sexy vibrant neon colors. They look nothing like something in a sprite. Are they mapped on dynamically. Is it some sort of cool lighting trick? I just want to know because its pretty eye-gasmic. :stuck_out_tongue:

Rayvolution: Yup, just a little bit more hopping around. Want to join my game of hopscotch? I’m a curious guy, I have many questions.