Purpurarius, aliud adiect. Pertaining to purple colour. vt Officina purporaria. Plin. An house where purple is died.
Lewis and Short: Latin dictionary
purpŭrārĭus, a, um, adj. [id.]. I.Of or belonging to purple, purple: officinae,
manufactories of purple
, Plin. 35, 6, 27, 46: taberna, Dig. 32, 1, 89: NEGOTIATOR ARTIS PVRPVRARIAE, Inscr. Orell. 4250.— II.Substt.A. purpŭrārĭus, ĭi, m., a purple-dyer, Inscr. Orell. 4271 and 4272.— B. purpŭrārĭa, ae, f.1.A purpledye house, Inscr. Orell. 2952.—2.A female dyer in purple, Vulg. Act. 16, 14.—C.Plur.: Purpŭrārĭae, ārum, f. (sc. insulae), two islands in the Atlantic, now Madeira and Porto Santo, Juba ap. Plin. 6, 32, 37, 203.