In The Deep it is pitch black. Animals here often use bio-luminescence to glow and signal their pray or each other. The light show has a sort of strobe light effect. Most seen light is a bright blue/green.
Hence the lights, I chose a nightclub. This could be just any normal kind of club party, but is more like one for EDM, Electronic Dance Music. This is also known as a rave. Here bright neon colors are common and it is most likely you'll see a few "dark" individuals. Therefore I chose solid fonts to show the heavy darkness all around. The end punctuation (!) is actually a symbol for the angler fish, who lures its prey in with a glowing light that dangles in front of its jaws.