It's a DX scripting plugin implementing the canvas object (loosely, as I don't plan to allow CSS color values for gradients, at least in the first version). What you see on the picture is half script/half hard-coded in the plugin (the sphere and setting the pattern as the source to the fill).
I'll open a new thread when it's ready for testing.
(See this Canvas tutorial
and the Yahoo Widget doc on the canvas to get an idea of what will be possible)