Between these two stills I see blue, yellow, red (or brown) and green. Between that and the "Be strong" I am really wondering if we're seeing Egwene's (!!) Accepted test here. Otherwise it's a really, REALLY on the nose dream sequence because Nynaeve would have no reason to put her in a rainbow...
Did anyone else notice that Egwene's skirt is rainbow colored in that scene where Nynaeve pushes her off the rock? If you change the video quality to 1020 it's SUPER clear.