Originally Posted by
quiltingmimipj
I don't think you can tell from the picture that the side strip is discolored.
My question would be, is it possible that the starch you used possibly have yellowed with time? If so, a gentle cleaning in the sink with regular quilt wash might be all that is needed, or I would hand baste them to a very light colored pillow case if I tried to machine wash them to prevent distortion. (Just a thought.)