Nursery rhymes for the 21st century?

One of my occasional sidelines is playing the piano at my local primary school. One of the perennial favourites they like to sing is "Baa, baa, black-sheep", so I was amused to see that somewhere in Oxfordshire, some nursery has decided that this could cause offence, and that instead they should teach their little ones to sing "Baa, baa rainbow sheep". Rainbow sheep??!! It doesn't even scan for goodness sake! But just what kind of person makes such idiotic decisions? Whoever they are, I think they should be led quietly away and re-employed as road-sweepers or something similar - more in line with their level of intelligence.