Interesting idea, but the ability doesn't strike me as very greedy. More murdery than anything.
Is not greed typical of murder? That's entirely the intent.
Specifically toward Jesus, but applicable to many :
Crimson for Judas and indulgent heretics
Gray for the Romans and Pharisees
Black for the High Priests
Gold for the Herods, all the way back to the Egyptians
All who stood to profit from Jesus' non existence