Generally its this - background, item background, item foregound
effects, toolstrip border.
- OnRenderToolStripBackground
- OnRender[Label|Button|MenuItem...]Background
- OnRenderItemText
- OnRenderItemArrow
- OnRenderItemImage
- OnRenderToolStripBorder
The toolstrip border is painted last, as it's sort of a last
chance fixup paint if the items happen to go edge to edge.