The theme is “Rudolph the Red Nosed Reindeer” but the secular Christmas icon immortalized in song by Gene Autry won’t be leading Santa down Yosemite Avenue this year.That honor is going to Crossroads Grace Community church Pastor Mike Moore.Moore was picked by the Manteca Chamber of Commerce to serve as grand marshal for the oldest and longest running twilight Christmas parade in the San Joaquin Valley. It takes place Saturday, Dec. 3, at 5 p.m. in downtown Manteca. The parade route is from Library Park to Manteca High along Yosemite Avenue.