Think you understand the colors you see every day? Think an apple is actually red, or a leaf is really green? Think again. This episode of Brain Games puts your brain to the ultimate test with a series of interactive games and fascinating experiments... (more) that will reveal a shocking truth—color is just an illusion created by your brain. We'll show you how some colors can make you fly, reveal ghostly colors that don't actually exist, and if you play along you’ll see how color helps keep you alive.