They cant :censor::censor::censor::censor::censor::censor::censor::censor: be colour blind, the darn things-I own 2 sets of identical cotton sheets, one solid dark blue, and one white. Whenever I put the blue set on, the gray cat slept on them. When I changed to the white,only my black cat would sleep on them. When I got a white sofa, the black cat immediately claimed it despite never wanting to sleep on any sofa I had before. The gray cat would seek out any black clothes that were lying on the floor or bedroom furniture or in the laundry basket or open dresser drawers-she would ignore coloured or white clothes. The black cat went for sleeping on the clean white bath towels in the towel basket-I had no luck at all for a while, not a single piece of clothes or furniture was safe from one of them. you should have seen the fights that broke out when I was given a beautiful white blanket for my bed and put it on over my blue sheets. My orange cat pretty much slept on anything that didn't move, and he shed just by walking around. If I had had a white cat I'm sure she would have gone for my burgundy or green clothes.