4k video colorful gradient blur background stock videoabstract backgrounds blue color gradient green color

abstract backgrounds videos blue color gradient green nature defocused textured moving loopable elements yellow colors seamless pattern orange repetition blurred motion gray light natural phenomenon modern purple red animated video multiple exposure pink shape smooth softness 4k resolution art beauty colored background curve design element digital animation composite film glowing hd format horizontal lens optical instrument multi people outer space pastel rainbow real time shiny template vibrant transition