This policy setting controls the default color for window frames when the user does not specify a color. If you enable this policy setting and specify a default color, this color is used in glass window frames, if the user does not specify a color. If you disable or do not configure this policy setting, the default internal color is used, if the user does not specify a color. Note: This policy setting can be used in conjunction with the Prevent color changes of window frames setting, to enforce a specific color for window frames that cannot be changed by users. Fix: (1) GPO: User Configuration\Administrative Templates\Windows Components\Desktop Window Manager\Window Frame Coloring!Specify a default color (2) REG: HKEY_USERS\SOFTWARE\Policies\Microsoft\Windows\DWM!DefaultColorizationColorState