Despite stating that it is not compatible with Windows 10, Customizer God can be used. It just cannot open the relevant DLL files automatically. You must press CTRL+O and browse to the DLL you want...

Yes, it is probably some DLL file. Once found you can replace its icons with Customizer God. But be careful, some files (such as Explorer.exe) have a digital signature and this is no longer valid if...

Maybe you have to enable color on start, taskbar and action center (see picture below). Right-click on the desktop and select Personalization. Then click on Color at the left. Scroll down and enable...