50 shades...?

Black is black, right?  Well, no apparently.  A school in Prestatyn has punished some children for wearing trousers that were the wrong shade of black.  At the beginning of every school year we get these silly stories of children being sanctioned for failure to comply with school rules relating to personal appearance - but it's usually hair styles, or length of skirts or types of shoes or something such.  But this must rank as one of the silliest.  Oh, for the days when schools saw their function as simply to teach.