addPreference( tr( "PREF_BALL_COLOR" ), elemGroup, LightApp_Preferences::Color, "SMESH", "ball_elem_color" );
addPreference( tr( "PREF_OUTLINE" ), elemGroup, LightApp_Preferences::Color, "SMESH", "outline_color" );
addPreference( tr( "PREF_WIREFRAME" ), elemGroup, LightApp_Preferences::Color, "SMESH", "wireframe_color" );
+ addPreference( tr( "PREF_PREVIEW_COLOR" ), elemGroup, LightApp_Preferences::BiColor, "SMESH", "preview_color" );
int grpGroup = addPreference( tr( "PREF_GROUP_GROUPS" ), meshTab );