| After thinking about this awhile it makes me wonder if I dont have it backwards. Ive assumed the outer edges remained unchanged (relatively) and it was the center section that had the cast. It did have a need for color correction. However, usually it is the red inks that fade first and leave the remaining colors like blue or yellow. It may be that the outer edges were what faded leaving the bluish bricks (how many bricks do you see that are blue rather than red). Maybe its the outer edges that need the color added back in and corrected and the center section simply tone corrected.
Tex |