abstract bright curves and blurred bokeh in blue, green and yellow gradient background

abstract anniversary art backdrop backdrops background backgrounds banner banners beautiful bending bent birthday blue blurred blurring blurry blurs bokeh bright brilliant bubble bubbles celebrate celebration christmas circle circles colorful colors colourful colours cosmic cosmos cover curve curved curves curving cyan decorate decoration decorative depth design effect festive glow glowing gradient graphics green happy holiday holidays light lighting lights pastel pastels poster round rounds season shining shiny sky space spring summer teal template universal universe wallpaper wedding yellow