I don't know if you have noticed, but just like us buns, 2-foots come in a whole range of different colours. I have always assumed that like us, a 2-foot is born a particular colour, and then keeps it, but my 2-foot (the one with no fur on the top of his head) seems to be changing. I first noticed it last night after we had been out in the garden all day, he seems to be turning red. This may be an attempt of course to try to compete with my good looks (some hope!) by copying the colour of my eyes, but I'm really not sure.