Answer:
Figured Bass. Bass part of a baroque accompaniment with figures (numbers) above it indicating the chords to be played
Explanation:
A lot of Islamic history and tradition is based off of their incredible mathematics, making geometric designs a constant in art work, buildings, sculpture, and much more.
It's meant to give off an ominous feeling, or like someone is doing something wrong. The dark colors and lurking actors give it more of a creepy, dark, and ominous feel.