colorful gradient background with grainy texture, featuring vibrant pink, purple, and blue hues, creating dreamy atmosphere with

gradient background colorful texture pink purple blue bokeh lights dreamy vibrant soft abstract grainy atmosphere night glow artistic blurred illumination design colorfulbokeh festive celebration party lighteffects depth visual creative artisticbackground smooth vibrantcolors atmospheric colorfullights softfocus blurredbackground nightscene colorfultexture artisticeffect lightburst glowing colorfulgradient dreamybackground visualeffects lightplay artisticlighting colorfulscene abstractbackground festivelights