This may be the best room-changing design idea since (almost ever!) Changeable and colorful do-it-yourself pixelated wall displays. Feeling dark? Switch from colorful rainbow patterns to a pitch black surface in seconds. Spin the wheels again to display words or patterns of your choice. This ingenious pixel-perfect wall design from Amirko has come up with this simple but dynamic wall decor idea for transforming an ordinary surface into a do-it-yourself design canvas that lets you set the tone (or tones) depending on your mood.