Comment 2 for bug 702547

It looks like moving paintbrush over two boxes then it fills them both, interesting. What is also interesting is that color of paintbrush is gray, repainting the same same two boxes for 5-times it gets black. With pencil it gets black first time it is filed.

I have never really understand why are there two tools like Pencil and Paintbrush if both of them are doing the same thing (Paintbrush with width 1).