I fish smallmouth more than any other fish all year. Your olive WB should do well but I prefer black or black and olive. That's my preference I don't think the fish care much.
Another option for this time of year is crawfish pattern, Dahlberg divers, clousers (chart/white), even a San Juan worm works on occasion.
If those don't work try a pair of 10 GRHE's dropping off an "indicator" slow drifted.