It's all about round corners and color gradients

As I just started a project that's supposed to contain the whole user interface in a canvas, I started to develop code for rendering backgrounds of items with gradients. It was quite tricky, because the first versions didn't work out the way I expected it. But with some extension of the current brush API I got a pretty nice result:

Gradient Demo

And I just added some small passages to my Git document about merging branches (answering the questions »How do I see the delta of my branch?« and »How do I merge the branch?«).