Did you read the book? Will's the main character and the one narrating the story!
1) green2) purple3) blue4) yellow5) teal6) i havent gotten any farther, but ive heard its orange
The full order is green, purple, blue, yellow, aqua, and the final color is red. If you want to see what they look like, look at the menu screen. Each line of text is one of the different colors, and...
yellow
Gravity. The gravitational pull of the earth itself.