Patrick O'Callaghan <pocallaghan <at> gmail.com> writes:
You can enable the classic Start Menu style by right-clicking on the
application launcher (lower left corner) and selecting the option.
That's as far as it goes I think.
You can also change the widget style and the window decoration theme to
something other than Oxygen.
As far as I know, the panel can't currently be themed, Plasma theming will come
in 4.1.
Kevin Kofler