A little change in the Radiance theme from 13.04 to 13.10 is bugging me. If you have an icon on the Desktop and do right click -> Rename and then click on the text, the text changed to black and the background changed to white in 13.04, but now in 13.10 the background changes to transparent. Unfortunately, that is not good if the desktop is a dark colour. I've been playing with modifying Radiance to be a bit more boring (more blue-gray rather than orange) but I can't find the setting that controls this behaviour in the css files under gtk-3.0. Anyone know what it is?
I've looked at the GTK+ 3 Reference Manual but I can't find it since I don't know enough about the names of the individual widgets, et al, to work through it to my specific item.
This is a known bug that was not fixed in 13.10 dev even though there was more than ample time, 3+ months from when I reported. So atm you need to live with or try to fix in source. Note it affects both ambiance & radiance themes
https://bugs.launchpad.net/ubuntu/+source/ubuntu-themes/+bug/1200870