Clamshell mobile phone has its advantages, which you need to think about before buying a mobile phone a certain type. But here we do not sell phones, and offers a different type of services or entertainment to a mobile phone, it is to paint it.
Coloring in a raster (pixel) format. If you use a graphics editor such as adobe Photoshop, then using the fill can easily paint a picture. Outlines for coloring perfect to spend some time coloring on the computer. For children this can be fun and not an obsessive study of the work in the graphic editors, and knowledge of the world in different shades and colors.