I have found this to be really an issue but it varies between my characters. My inquisitor - level 38 has a number of legendary (Ker's Hand), and set pieces all of which appear as the normal white text color.
My Dryad found a Helmet of the Thorns - level 15 and it appears to be color similar to the unique on he PC version. Is this something their starting to fix or is it just random that I see different color for that helm?