I’ve been asked to replace approximately 20 brick at the base of a home which has become discolored over the years from water action.  I can’t remove those brick because it would compromise the structural integrity of the facade.  I had thought about removing approximately 2″ of the discolored brick, cut brick taken from the porch and using thinset replace those brick removed.  I had also considered painting the brick with a matching color of the existing brick unaffected by water.  Any thoughts?