TCHOW Rainbow (iPhone iPod)
CheatingDome.com
Various Tips and Tricks
See those little black dots? Those are your friends. Use them to peel off individual layers of rainbow and achieve tricky objectives.
If you need time to think but you don't want to take your finger off the screen, you can tap it and not lose the badge.
Don't try to complete every objective for every badge at once. Do them one at a time; they still count.