No theme packs. I am using a high contrast theme with modified colors that I save to a new theme, of which I find reverted to their defaults each time I reboot. As if my theme isn't saved, which is, but isn't used. A default high contrast theme is used instead.
I looked it up a bit on the web and the solution was some kind of bug with sync, which had to be disabled. But I removed any sync features with Reducer, so I thought that this might be the problem.