Deep dark outer space with a vibrant neon rainbow arc, glowing blue and purple nebulae, and a small ringed planet.

Deep dark outer space background filled with vivid, glowing stars. A bright diagonal neon rainbow crosses the scene like a cosmic aurora — smooth, connected, and glowing, not faded. Below it, a blue, purple, and teal nebula glows downward with subtle misty clouds. In the distance, a small luminous planet with rings floats near the edge. The colors should be bold, high-contrast, and vibrant, not soft or washed out. Perfect as a messenger chat theme — make it look sharp and colorful, not pastel. See more