yellow and blue

Not a reference to AFC Wimbledon or the Wimbledon FC of old but to towels. Sally and my towels. For day to day use we have four towels, two in use and hung on hooks on the back of the bathroom door and two in the wash or the linen cupboard waiting to be rotated in. Two of the towels are blue and two yellow. Sally insists that my towel is hung on the left-side hook on the door so that I know which is mine and therefore use mine and not hers. Fair enough I guess; a lady does not want man-wipe on her towel. The fact she uses my towel and hers - one around the body, one turban style over the hair - seems irrelevant. The important thing is that I must NOT use her towel. So I had an idea. To ensure there is no mix up I suggested we have one yellow and one blue towel in use and I use the one the colour of which Sal likes least. Made sense to me. And, I am sad to say, only me. Venus, Mars blah blah blah.