In true Microsoft style, there's no way to change this easily through the Settings pane, or through the Theme settings pane either. So how do you do it?
- Download Mobile Registry Editor
- Make sure your phone is connected over ActiveSync
- Load Mobile Registry Editor
If you see a binary key named
4 simply edit that and if you want the colour black, put in
00 00 00 00 then save it.
If you don't see a binary key named
4 then you'll need to create it. Do this by right clicking and going to New -> Binary Value...
00 00 00 00
If you had to create the key then the colour change should be immediate, if you were editing it you probably need to restart the phone.