Have been a pretty long-time fan of Stardock's software including Start8/10 and Groupy but I tried WindowsBlinds and thought it was cute but just wasn't for me. Unloaded the themes, uninstalled the program, and noticed that some of the Windows UI colors are not what they are default supposed to be. Seems like certain blue elements are now a sort of grey including the selection window (when you create that box to select multiple items) and certain progress bars in programs like qbittorrent. I've tried to reset everything by re-installing and switching themes from the default to another and back but that didn't work and even tried purging WB to no avail. I guess WB just happened to mess with an actual system theme file. So if anyone can help me and tell me if there's a solution without anything drastic, please let me know.
Edit: fixed it myself. So here's the answer for anyone else who gets caught with this
Go to C:/Windows/Resources/Themes and click on aero.theme