Lexadis: You can color them however you'd like~ I would have put something like that in the rules if it were the case.

Guys, these are just coloring pages like from a coloring book. Don't worry about how nice they look or if there is/isn't a scheme. You could use a color once and never fill in another section with it again as long as you have fun it's all fine by me... and you'll still get the surprise! ;P