Maybe she doesn't like wearing all gray clothes Paul?
I had a very close friend who always wore a green John Deere hooded sweatshirt....I mean he wore it every day, hot or cold! It was always clean even though he was a farmer and worked in it constantly. I figured he must keep his wife very busy washing this green sweatshirt. When he died, I found out his ancient Chinese secret... It wasn't Calgon - He had 5 identical sweatshirts hung in the closet and wore a different one each day.