blue, purple, light-blue, pink, yellow, red color gradient background, abstract background

blue light blue red purple yellow orange color pink color reef neon colored color gradient crayon multi colored backgrounds colors iridescent digitally generated virtual reality abstract abstract backgrounds colored background curve defocused futuristic glowing painted smooth vibrant color art design design element modern art poster web banner web page motion freedom mixing geometric shape social media focus background focus foreground wallpaper sample 1980-1989 book cover brochure pastel colored 1980 paint hologram holographic 1990-1999 invitation foil material greeting card light natural phenomenon neon lighting paper retro style shiny