Gizmo is definitely a caramel, but he doesn't look like he is homozygous for anything else. As for hets, you really can't tell if he is carrying any as they do not show themselves. Some people say that bloodred and caramel do show "het markers" but I don't see the bloodred one on Gizmo.
It looks like he has just eaten a large meal so I would recommend that you minimize the handling, such as when taking photos, until he digests his dinner. Too much handling can cause a regurge.