I'm new to Mint, and while messing around with the different themes I appear to have broken something. The attached screenshot shows what happens to a file window when I try to click on it. Interesting, it returns to normal when I lose focus on the window. I was using Alt+F2 and then entering 'r' to restart gnome when it broke.
Can anyone point me in a good direction for fixing the theme? Should I or can I reinstall Gnome 3?