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.
Radiating starburst medallions in jade green and white fill the field, each burst feathered outward into fine spiked rays with lacy, interlocking filigree between them. The medallions sit in staggered rows, offset by half a step from row to row, so the eye reads a diagonal drift of bright rosettes across the surface.
CC0 — use it for anything, no attribution needed.