"Sir Galahad, robed in red (the color emblematic of purity)." Throughout each painting Sir Galahad is adorned with a red robe or cape, which is said in number III of the BPL outline of Edwin Austin Abbey's paintings to be symbolic of purity? I find that strange, because I would normally associate white with purity and red with sin, guilt, passion etc. This seems problematic for Galahad, for he is supposed to be the virgin knight destined to overcome sin and redeem the world by setting free virtues.
Also, in the boat with Galahad in number XII are three tree branches, one white, one green and one red. The white which is representative of the tree of life, the green branch for when Cain was begotten and red when Cain killed his brother Abel. I believe the red cape is not worn by Galahad because it symbolizes purity, but because it does represent sin, guilt and passion, which Galahad must overcome for 'the world.'