request for comments: Theme Engine

Like I said in the previous email I am starting work on the theme engine.

I have some ideas on how to proceed.  But I wanted to see if anyone
out there has specific ideas on they think it should work.

Along with cleaning up the current interface, I am planning on adding
theme support for transitions..  So the theme would handle animation
of state transistions (like you want your buttons to bounce up and
down when pressed or windows to spine closed, or other such silly
effects. )

So, if there are specific things you think the theme engine should
have/do/ speak now..

-Dustin