Parents are now able to draw backgrounds for their children. This
means we can now have elements inside other elements that aren't
restricted to one background color.
This will eventually completely replace basicfont. Need to design
a custom default Tomo font and implement a way to load from a
compressed binary format that will take up a very small amount of
room embedded into an executable.
The handle width can be specified by themes with padding values.
This also allows for far more granularity of the handle width
adjustment as it can depend on context.
