Hello,
Oh no! Art looks like he is in distress, I agree.
Were his eyes sunken in like that earlier today & was his beard black also?
Maybe some food didn't sit very well with him perhaps. If you can, you can try to get some oral fluids into him, to see if that helps bring up his pads above his eyes to rehydrate him. Has he opened his eyes at all?
Keep him warm overnight in his tank or his bed, if he is sleeping beside you. Just keep him comfortable. Maybe you can place him on a basket or in a little make shift bed beside you tonight if you haven't already done that.
Let us know how he is doing. He has done so well & I know he is a very happy boy.
Tracie