Turning off Global Dark Theme in Ubuntu GNOME 15.10 makes selected item in the Software Center unreadable. Similar things happen in the Extensions page of GNOME Tweak Tool. I have tried disabling all the extensions.
EDIT: I just tried this on Kali Linux 2.0 which was also running GNOME3 and the issue in the Tweak Tool seems to be absent there. I thus think it is most likely an issue with my specific display.
The one regarding the Software Center remains.