I'd really like to see a similar toolkit, but Qt-based (as this seems to be the way to the future), and with Python bindings...
QColor myColor = QtHeWrapper::showHeSimpleColorDialog();
As a side note, I'm trying to determine how some people do these UIs with buttons at the top and a list, table or tree beneath, and the buttons scroll up off the screen when the list/table/tree is scrolled down ?