I.Homeric usage
from πορφύρω
3.of stuff, cloths, etc., dark, russet.
4.of the rainbow, prob. bright, lustrous; and of serpents glittering.— Hom. seems not to have known the πορφύρα, so that the word does not imply any definite colour.
II.after Hom. (from πορφύρα) dark red, purple or crimson, Pind., Hdt., Trag.
2.purple-clad, in purple, Luc.