Coloring bitmap fencing
The usual fence. It has a rounded top. Boards the same width and thickness. Used mainly for the protection of front gardens. As a simple decorative fence. When coloring in the fence you can put a texture or pattern, or apply different effects.
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.
Coloring can be printed, and then paint.