It is hard to judge which is more colorful in Oklahoma — the sunsets or the characters who make her. On Tuesday, Sept. 3, Pioneer Genealogical Society will host Jonita Mullins, author of “Oklahoma Originals” at 7 p.m. in the Ponca City Library basement program room. The public is welcome. From Indian chiefs to cattle men, beauty queens to outlaws, social activists to explorers to oil tycoons,…