a 70s disco theme with glitter balls and rainbow lights creating a lively atmosphere for partyrelated banner backgrounds

70 disco theme glitter ball rainbow light create lively atmosphere glamour nightlife glow jubilant nostalgia technicolor shimmer background flashy vivid groovy fun hue night glint jive sparkle reflection festivity event mosaic colorful revival fever glister decade music funky banner retro vibrant blossom flash vintage party club illuminate celebration brighten seventy