Strange booklung

[Transylvania]

I just got a good look at my versi sling's underside and noticed that one booklung looks different from the other. The other looks nice and normal and surrounded by blue. But this one looks different. Inflamed, swollen? I dunno, here's a photo:

EDIT:
My mistake! It was just a trick of the glass (err, plastic). Thankfully it moved:

So all is well. ^^ You can go about your business.

 

[P. Novak]

Haha, we all make mistakes.

Gorgeous little A.versicolor though.