More on Barrier (by Dorian, this time around, much better view), from E3's Redcliffe demo:


Same animation as Solas', subtle FX, but still visibly the same Fade-ish blue-green tint, unlike the purple-pink from previous games. Also: forget I said "bubble" - that's incorrect when AoE is the better term - it only seems like they're sorta "projecting" this field around them during the animation, which is quite fast - whereas with Solas, the PC had Tactical view on, and then resumed - almost as though Solas was holding that "pose" for longer when it's not the case - my bad, I misspoke.
Think: less Biotic Specialist's bubble in ME2 and more ME3's Barrier - after it is cast, the affected chars will have this (again, nor purple or bubble) blue-green, glowy, energy flowing on their bodies.
The color-scheme point stands, and if true; what that might tell us about the Rift Mage spec? 
Examples of Barrier's sFX on the characters:

"Barrier fades. Beauty, and by beauty I mean my glorious mustache, is forever." - Dorian