Why does my 1996 $20 bill have strange colors?

Jeff N. I have a 1996 Twenty Dollar bill with an oddity. On the face of the bill, the serial number on the right is green, while the serial number and treasury seal on the left are blue. The bill face is also white compared to the typical green/black tint on all bills I have compared it to. Is this a common oddity or do I have a bill I could sell to a collector?

It sounds like someone laundered their clothes and left their money in the pocket.

I like to wash my money in Cheer with a tad of bleach. It brings out those colors just right!