71 tabs you had pinned or 71 new tabs?
For the longest time SElinux, which a friend uses in Fedora, was choking on colourd. Notwithstanding that the Nvidia driver was a little problematic to install, it was better than the native nouveau drivers Fedora was shipping at the time.
Around the time of Fedora 18, chrome would start and then download a 1mg or more file to a folder. Then an automatic update fixed the problem so I didn't have to look into it too much.
Colord is responsible, in part, for defining the neutral palate that all else is rendered against in the display.
You are on testing so I'd either regress to stable unless there is a good reason not to or, have a look for colord debug notes in the logs.