Created attachment 119553 [details] Comparison When enabling "Use opengl for all rendering", the preferences window has an awful lot of black on black, making it almost impossible to use. Turning off the opengl option fixes the problem. The attachments show the same window both without opengl, and with. No other changes to theme/colour etc.
Looks a bit like bug 89011
*** This bug has been marked as a duplicate of bug 89011 ***