My solution was for windows defaulting the title bars to blue after locking windows. Glass turned my title bars gray when I installed it. The GUI tool didn't work for me but I read you can change the color via the registry. I didn't get a chance to play with editing the colors this way. The GUI Tool is located on the download page under "Testing version of GUI application to modify Aero Glass parameters." When I tried to download it using firefox, the file was corrupted and not extractable. I had to use edge.
https://www.glass8.eu/files/AeroGlassGUI.7z

If the tool doesn't change the colors for you then edit the registry.
https://www.glass8.eu/guide