rainbow background. iridescent gradient texture. abstract color foil. multicolor pattern. watercolor with metallic effect. metal

multicolored backgrounds holographic background iridescent multicolor watercolor gradation beautiful wallpaper gradient abstract metallic backdrop colorful material metalize swatches hologram rainbow texture pattern colored surface designs concept graphic twinkle glitter vibrant mottled speckle metalic samples effect vector patern purple glossy bright orange blurry yellow modern violet smooth colors swatch sample design silver textur color metal ombre print