ευπόρφυρος
From LSJ
νύκτα οὖν ἡμέραν ποιούμενος → without delay, as soon as possible, as fast as possible, making the night day, making night into day, turning night into day
εὐπόρφυρος, -ον (Α)
αυτός που έχει λαμπρό πορφυρό χρώμα.
[ΕΤΥΜΟΛ. < ευ + -πορφυρος (< πορφύρα), πρβλ. αλιπόρφυρος.