A background should sit behind the text, not in place of it. This paragraph lies on the tile at its true scale — if it reads without effort, the tile can go under content.
Mint-green lattice lines outline diamond and hexagonal cells on a deep forest-green ground, with rounded pentagon-like rings and small eight-lobed florets set inside. Diamond cells and smaller ring motifs alternate in staggered rows, repeating in a regular grid across the page.
CC0 — use it for anything, no attribution needed.