Please see attached image. Note how the string "Home" in the menu is differently rendered to the same string in Dolphin. Folder view has the same problem. Reproducible: Always
Created attachment 72398 [details] Snapshot showing the issue
Created attachment 72403 [details] Another snapshot Here's another snapshot. The above "Home" string is from Dolphin, the one below is from Plasma. Seems like Plasma somehow ends up with grayscale antialiasing. I've also discovered this bug report on launchpad, which appears to be the same thing: https://bugs.launchpad.net/ubuntu/+source/kde-workspace/+bug/921555
Okay, this is a duplicate of bug #190627. I'll just go and vote for the old one. *** This bug has been marked as a duplicate of bug 190627 ***