Lewis & Short

purpŭro, āvi, ātum, 1, v. a. and n. [purpura].

  1. I. Act., to purple, i. e. to make purple-colored, to dye with purple: undas, i. e. to darken (cf. purpureus), Furius ap. Gell. 18, 11, 3: purpurati nimium ocelli, Mart. Cap. 9, § 918.
    1. B. Transf., to beautify, adorn, App. M. 6, p. 427 Oud.
  2. II. Neutr., to be purple or purple-colored: purpurantes violae, Arn. 5, 160; Prud. Cath. 6, 82: purpurantem pingit annum floribus, Auct. Pervig. Ven. 12; App. M. 10, p. 149, 9.
    1. * B. Transf., to be painted or adorned, to shine: quae frondens purpurat auro, Col. poët. 10, 101 dub. (al. quae frondent purpurā et auro).