Well, honestly, from your photo, your toad looks fine to me. The slime on him looks like shedding. Again, in the photo, he looks plump but no different than my toads. Unless he was even more bloated before the picture was taken...and these toads do go lighter and darker depending on temperatures and stress. If it was colder than normal, and with the move, he was darker because of it and should lighten up once he has his normal conditions back. Is he eating? Moving? Get his temperature up, a quiet place to destress and try feeding him then. Keep me posted and I will try and help.