abstract gradient blurred colored background. smooth transitions of iridescent white and multi colors. colorful rainbow backdrop

abstract art backdrop background banner blue blur blurred blurry bright color colorful concept cool creation creative decor decoration design effect elegant element event fresh freshness future futuristic geometric glitter glossy glow glowing gradient graphic green light modern multicolor orange pattern purple shiny smooth soft space texture vibrant wallpaper colored transitions iridescent white multi colors rainbow background colors wallpaper