Comment 2 for bug 594629

About themes:

I plan on making Cardapio more gtkrc-friendly, so you would be able to change the look of all widgets from your gtkrc theme file.

But this is not the same as you are asking for. Full-fledged themeing, a la GnoMenu, is probably not going to happen. I want Cardapio to stay simple, fast, and effective, and high levels of themability don't go well with that mantra. Sorry.

   ~

About scrollbars:

There are three scrollbars that can appear in Cardapio at any time:
1) Vertical scrollbar on the app list (right side panel)
2) Horizontal scrollbar on the app list
3) Vertical scrollbar on the category list (left side panel)

Scrollbar (1) must stay.

Scrollbar (2) only appears when there are button labels that are too wide to fit (usually in search results), but there is a plan to fix this problem (see bug 592470).

Finally, scrollbar (3) should only appear when you have too many categories to list. In which case, there is nothing I can do -- and no amount of theming would be able to fix this either. You should consider resizing the Cardapio window (by dragging the edges) until that scrollbar goes away.

The end results, though, is that the default situation for most people should be that there is only one scrollbar visible.