Change the Logon Background Colour

Change the Logon Background Colour:-

1.Use a registry editing tool to navigate to the following tool:

HKEY_USERS\.DEFAULT\Control Panel\Colors\Background

2. Change the following value:-
Data Type: REG_SZ
Value Name: Background
Value: Decimal RGB value for the colour you wish to set, for example:

Red: 255 0 0
Green: 0 255 0
Blue: 0 0 255
Black: 0 0 0
White: 255 255 255