After I accidentally clicked "update" button, all my color preferences went BOOM! Now I can't configure almost everything. Presets and themes are not working for me. I already got trouble with my eyes. And now I don't really know what to do... I can't download older version, can't configure themes by my own, can't cancel update.

What should I do? If you are not the one to help... then I have no other option than change browser....