The reason it's likely not working for you is the regional code for your language (german.) In the registry, the names for the colors are stored on a per-language basis, in different locations. En-US, for example, is 0409. You'll need to go to the correct location yourself, and edit the entry. I made an editor tonight that can edit the values, get it here
Longtime WM6 User with a brand new glossy Samsung Focus.
Itching to get my hack on.