Originally Posted by ravent-n900

try this:
1.install the .deb
2.execute this

Code:

gconftool-2 --set /apps/osso/hildon-desktop/portrait_wallpaper -t bool true

3.download http://ifile.it/wh5ebi2
open theme customizer----> select import theme-----> select the downloaded one----> select Mmm theme

i hope this fix black background