I fish with jigs quite a bit and have some pretty good success all year round. I'd say presentation matters more than color. I've had some 5 or 6 fish days from the bank of the same river and hooked half of my fish on light colors and half on dark colors. To me the key is to not let the fish see you if possible, use a low vis float, keep your jig 6-12 inches off the bottom, and you've got to be able to read water. A good jig to start with though is the nightmare pattern - white head, red body, black maribou tail. I've caught fish from the WA./Or. border to Forks on this pattern.