@JCarter426 and @Salk
Actually, based on the description of the robe, it once belonged to Cay Qel-Droma. The robe being described as the red cloak he kept around his his neck and over his Jedi robes. To my understanding, the item worn is simply that red cloak, rather than a full set of robes. So in terms of lore, simply turning the cloak red is all that's really necessary, unless you can re-shape it to better resemble the one depicted below. So there isn't a whole lot to work with, unless you take the coloration and apply it to the rendition of the cloak depicted in the second image I've attached.
Alternatively, you could always apply a red cloak to the Star Forge robes. I always envisioned Revan wearing it over those robe anyhow, but that's more of a hassle than simply making a red cloak.