Advanced Appearance Settings Dialog Box for Windows 10 - Build 21H1  

Cesare said:

Yeah, Open shell is good.

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If your problem is solved, Mark this thread as Solved and thanks the person that helps you.

Cesare said:

I give you a "big thank you" for helping me. My issue is not resolved yet because the Advanced Appearance Settings dialog box is not yet available in Windows 10.

I will only mark this thread as resolved, once Microsoft has added the Advanced Appearance Settings dialog box in future builds of Windows 10. Please note and understand that.

Many thanks for your help.

Let's just to wait to Microsoft to add that.

Lots of discussion on it (older)
Window Color and Appearance removed in Win10? - Super User

Note that besides
SMACC
S.M.A.C.C - Superfly's Mouse Assisted Color Chooser

by user Superfly there's
Customize Colors in Windows 10 - WinTools.Info

Or you may prefer directly editing the registry ...

dalchina said:

Lots of discussion on it (older)
Window Color and Appearance removed in Win10? - Super User

Note that besides
SMACC
S.M.A.C.C - Superfly's Mouse Assisted Color Chooser

by user Superfly there's
Customize Colors in Windows 10 - WinTools.Info

Or you may prefer directly editing the registry ...

Recommended. I use SMACC and it works great. Even registry tweaks tho..

And there's another utility for you too.

You may need to switch off your PC until that dialogue is back...