john lucas
Here is a photo of a piece of Box Elder I have had on my tool chest for the last year. The piece on the right was always face down and never got any sunlight. The piece on the left was flipped over every time I walked in the shop so each side got 1/2 a year of non direct sunlight. In a previous test I did Box Elder in direct sunlight would fade in just 3 days. I could not capture the actual fade in a photograph. The one on the right is brighter. The one on the left has lost a fair amount of color and the yellow darkened.