It looks like theres an easy solution for this:
https://virtualcustoms.net/showthread...-change-colors

Quote Originally Posted by Dark Knight View Post
Got this from Mr. Grim a while back, I used to have the same problem on Windows 8.1 ...........

Information
Getting rid of white areas in themes after coming out of lock or sleep in Windows 8.1

Windows 8 loads defaults from [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Themes\DefaultColors] after every lock/sleep/hibernate.
Make a backup of that key, take ownership of it, and then delete that whole key (defualtcolors).
Then you wont have a problem.


Don't worry, it works on Windows 10 too