thank you saturn, your script helped me

#!/bin/sh

gconftool -s --type=string /meegotouch/theme/name nameoftheme
/sbin/initctl restart xsession/mthome
exit 0

i packaged succesfully that script on a deb file, but how i can switch to blanco automatically when uninstalling the theme? (obviously making a script with "blanco" name) but with the script inside "prerm"(inside DEBIAN folder)?

And how i can delete the restart from the script?? removing "/sbin/initctl restart xsession/mthome"??