the Oxygen theme is (for pre-4.3) located in the default dir, so you should change the default/lancelot/theme-config (and restart L afterwards)

/usr/share/kde4/apps/desktoptheme/default/lancelot/theme.config :-

http://sayakb.pastebin.com/m7fea779b

Already tried that. Doesn't seem to work.

Hm, I haven't noticed the screenshot last time. Your themes installation is broken. It somehow mixes air (the middle pane, the colours) and oxygen (the rest).

My advice is to wait for 4.3.

Alternatively, you could try to remove all lancelot-theme files, clear plasma cache and reinstall lancelot.
# killall lancelot
# rm -fr /usr/share/kde4/apps/desktoptheme/*/lancelot
# rm -fr ~/.kde/cache*/kpc/
# rm -fr ~/.kde/cache*/plasma-svg*
# make install
# lancelot

Still fails..

I guess I'll wait till 4.3. Thank you for all the help so far

wOOt! Seems like it worked great! Just needed a reboot



Thanks, marked as solved