Rainbow gradient background with a soft blur effect

Colorful gradient background with a grainy texture

Colorful gradient background with a grainy texture

Colorful gradient background with a grainy texture

Glowing rainbow squares on black background

Colorful swirl of dots and lines in a cosmic pattern

Elegant pastel gradient in pink, yellow, and purple for branding

Rays of yellow, blue, and white on a black background

Retro striped background with grainy texture

Teal and purple crystal background