Is it really hot where you are? It could be hot. Otherwise I recommend keeping an eye on it to see if anything changes and if you continue to be concerned consider a vet visit.
Aliza
Congrats on your new gecko! I started about 22 years ago with one gecko and went way overboard. Still have about 25 left, but we're all aging here now!
Aliza
Are the hiding spots all on the ground? Are there any plants in the enclosure, even fake plants? Maybe you could post a picture of the enclosure.
Aliza
I've owned a lot of geckos and some of them do seem to respond to human interaction. If your geckos seems OK with it and possibly initiates, I'd say go with it and don't worry about it. We may never know for sure but as long as it's thriving, it's OK in my opinion to assume the best.
Aliza
The first picture does look kind of yucky. Is there a reptile vet anywhere near you? It might make sense to have an appointment and bring some poop samples.
Aliza
Feel free to post poop pictures; it's not considered to be obscene. Sometimes my geckos' poop looks green as well. Sometimes when the poop is fresh, it looks green and when it dries up it's browner.
Aliza
Good luck with him. When you offer bugs do you put them in front of him or do you hold him and push the bug into his mouth. If you're not doing it that way, try that.
Aliza
It's very likely the poop is due to the critical care since it's a puree. If you hold your gecko and push a bug at its mouth will it try to eat it? If you haven't tried that, try it soon because that's a lot closer to a "normal" diet.
Aliza
My entire colony got crypto 9 years ago. I had most of them tested and they were all positive. Because of that I had to stop breeding geckos and with a few exceptions stopped increasing my collection. During the first year I lost about half of my geckos, which included over 30 who had hatched...
There could be a small piece under the eyelid. You could try flushing his eye by dipping your finger in water and putting a drop on his eye. If you can see anything, you can take a tweezer and carefully extract it. You can hand feed him for now if he'll tolerate it and you may want to...