Windows XP Theme color during login / logout

Using Windows XP, I prefer the "Silver" or "Olive" windows theme colors, since I get sick of the strong blue colors used by default. Changing the theme is very easy for normal situations (right click desktop -> 'Properties' -> 'Appearance' -> 'Color scheme').
But during login and logout of Windows XP, the default colors are still used.

Using the Windows PowerToy TweakUI, one is able to easily copy some configuration out of the current desktop configuration into the default desktop configuration used during login (like settings for screensaver, mouse, etc) but the Color scheme is not copied with the PowerToy.
To easily change this setting, one can open it's registry editor and change the values manually:

Start -> 'Run' -> type 'regedit' -> 'Ok' -> Navigate to the following key: 'HKEY_CURRENT_USER\ Software\ Microsoft\ Windows\ CurrentVersion\ ThemeManager' -> Double click on the 'ColorName' element -> change the value into 'Metallic' (for Silver theme colors) or 'HomeStead' (for Olive green theme colors).