Lights to show prey in cock vore?

[qawsedkre]

I put my finger up against a small elevator light and the way it lights up the flesh with red while the bone is darker it gave me an idea.
It could be like a semi-internal with the shifting drakness inside the sack while a flashlight lights it up from the other side.

[AllSwalloAndNoChew]

You could have the pred be fascinated by how it looks

E. G they have a light up disco floor and see how the diff colors light up the prey

Or a merman/ futa who loves how cave diverers lights look inside them, how it shows the veins, and how internal lights plays off the diff texture of skin, diving suit, and the air tanks