Some more comments before I move on to something else:

- It would be much more readable to use enumeration and named values
  in the rc files rather than cryptic integers:

        glazestyle = 1 # 0 = flat hilight, 1 = curved hilight, 2 = concave style
        menubarstyle = 2 # 0 = flat, 1 = glassy, 2 = gradient, 3 = striped
        menubaritemstyle = 0 # 0 = menuitem look, 1 = button look
        menuitemstyle = 0 # 0 = flat, 1 = glassy, 2 = striped
        listviewheaderstyle = 0 # 0 = flat, 1 = glassy
        roundness = 5 # 0 = squared, 1 = old default, more will increase roundness


- While these knobs to tweak are certainly nice, the one thing that
  most people want to tweak in a theme are the colors. I would
  personally be much more interested in themes which make use of
  the new symbolic color mechanism in GTK+ 2.10 to create
  "recolorable" themes.