The arch is one of the few architectural elements that can withstand hundreds of years. Only ruins may remain from the structure, but the arch will delight your eyes for a very long time. I tried to reproduce this monolithic element in my own way.

Only 5 different palettes.
Just code. Made with p5.js
Open, wait and press "s" to save [1000x1200]

What a pity that it is already the last month of this spring.