[OldJimi]

Mine is a 22 as well, saw a sale ad for one of the same year and recognized the same yellowing floor linoleum. Keystone must've got a deal on that batch of flooring.
Magic Eraser will get rid of it, just be sure you have a plentiful supply of elbow grease ready.
Stop the presses!!!
The boss says the yellow in the section that was replaced and in the section that she magically erased are yellowing. So the only lasting solution is to change the name of the color Antique Ivory Gray.