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

multicolored backgrounds holographic background iridescent watercolor multicolor olographic holography wallpaper holograph gradient abstract metallic backdrop colorful material metalize swatches hologram rainbow texture pattern colored surface designs concept mottled speckle metalic samples effect vector patern purple bright orange yellow modern violet colors design textur smooth swatch sample silver liquid sunset spring aurora pastel color metal ombre print