Make sure the Bolt nub has no background or border. 
Make sure the Bolt nub has no background or border. 

Fixes #6222
GawainLynch/bolt,romulo1984/bolt,romulo1984/bolt,GawainLynch/bolt,bolt/bolt,nikgo/bolt,electrolinux/bolt,GawainLynch/bolt,nikgo/bolt,lenvanessen/bolt,lenvanessen/bolt,GawainLynch/bolt,nikgo/bolt,electrolinux/bolt,lenvanessen/bolt,bolt/bolt,nikgo/bolt,bolt/bolt,bolt/bolt,romulo1984/bolt,romulo1984/bolt,electrolinux/bolt,electrolinux/bolt,lenvanessen/bolt