Wolvering Saddle is rated black, but only because it only leads to black diamond terrain.
It is not that steep and is usually groomed until the entrance to Wolverine Bowl.
From the top of Summit Express follow the chair line and turn left at the first opportunity heading north on the ridge line.
Do not turn left off of the ridge as you will be out of bounds with a long walk back.
Turn right into Wolverine, Beaver, Estelle and Bernie's bowls successively off the top of the ridge.