I have a found a bug to where you shear some certain sheep and you get brown wool! Even though they appear to have white wool . Not all sheep have this bug but only some sheep. Their wool regrows every time they eat grass!XD I have found a bug I meant to say
Perhaps since brown wool cant be made yet they implemented it through rarely
or occasionally falling off of some sheep yet they could have added brown ones
but I guess then people would be asking where the other colored ones are.