Clones can look a bit odd..I'd re-pot quick, and get some nutes going, then watch..that lighter green should balance out, new growth is lighter at first... start your nutes slowly and you should be fine... luck
** there is a great chart with pics.. FAQ ..to.. plant problems...to nute/ph prob....to chart by Nietzsche.. just don't get that see everything wrong in my plant syndrome.... hoof sounds ARE usually just horses..and not some bizarre zebra...