Lewis & Short

purpŭrissātus, a, um, adj. [purpurissum].

  1. I. Painted with purpurissum (anteand post-class.): buccae, Plaut. Truc. 2, 2, 35: genae, App. Mag. p. 323, 13.
  2. II. Transf.: fasti, i. e. the consular registers, fasti consulares (so called from the purple clothing of the consuls), Sid. Ep. 8, 8.