style bug's at root systemsettings

hello every one
as we know there is a lot of kde styles at systemsettings
so i tried to change to some of it at user account and when i applied it , it works fine
but at root account there will no any change the root account will stuck with ia-ora-kde style
so is there any suggestions
as we know there is a lot of kde styles at systemsettings
so i tried to change to some of it at user account and when i applied it , it works fine
but at root account there will no any change the root account will stuck with ia-ora-kde style
so is there any suggestions