Undertale Coloring Undertale Coloring ,The best app for coloring book therapy is now on your Android phone! Pixel Color is a coloring app for all ages. The kids and whole family can coloring in the same way they do on paper using different tools. You can fill the colors in prepared image outlines and can also create your own original drawings. The game is very fun, simple and educational for all ages. The game includes the following features: - Coloring Books for high quality adults and children. - Unlimited palettes - Undo feature - Color pipette for easy color matching - Simply tap to pick the color and paint - no time limit on app use - All content is 100% FREE so let's start now with every favorite Undertale Coloring.