I've been having issues with my interface (messed up colors, menus, and so on). i have deleted the .gnome folder, .gconf, .gconfd.
Some issues are still there especially with ambiance theme, I could get it fixed by installing some alternative ambiance themes (ambiance-blue, ambiance-red, etc).
The issue that I cannot fix yet is the color of dialogue windows' text. the background is grey, the text is white. Where can I find such setting?