Windows 10 theme stuck on default white theme with custom color border line! How can I change it?

The "original" theme for my windows 10 when I installed it had colorable innersides, after I went into themes and changed it to "default theme" it got stuck as this "default" theme that is all white with custom color borderline. I've tried changing to the other themes but nothing works, I tried resetting I tried everything. At this point the only option I can think of is to go back to windows 7 then reupgrade to windows 10 again and never touch the custom themes.....