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.
Starburst rosettes in violet, coral and mustard glow across a sage-green ground, their spiky rays fanning out between cross-shaped green cutouts. Star clusters sit in a staggered grid, so the repeat reads as a rhythmic lattice of bursts linked by smaller diamond and arrow shapes.
CC0 — use it for anything, no attribution needed.