Kolorowanka (name meaning `Coloring Book` in Polish) is a very easy to use and well featured program which can be used for coloring images, just like in the coloring books. Of course it`s not only designed for the usage of small children, because, as you probably know, coloring images is a very relaxing activity for everyone. It has a very rich color palette, fill-styles, support for BMP and PNG images and many, many more !