I had success using a 4" Yellow lizard on the Umpqua. Also used an orange Fatty Z and bright colored Ned rig. Basically anything bright, so you can see it disappear when the bass takes it. Obviously this is when sight fishing the bed.
Pulled a very stubborn 3 pounder off a bed yesterday with a black steelhead jig with a green w/ black fleck dubtail trailer. I was maybe 3 feet from him but he wouldnt leave no matter what. Took about 5 minutes of aggravating him before he hit but he took it up.
Found this my notebook for LGM Bass fishing in the '80s.
During the spawn, both the males & females are in pretty bad shape. The females will be resting in deeper water trying to get her strength back, and the males will be guarding the nest, and will not eat.