irregular polygon background - triangle low poly pattern - light pastel full spectrum multi color rainbow strip

acute art background banner blank blue color colored colorful colour crystal cubism design diamond empty fraction fractional fragment full geometric geometrical geometry gradient green grid illustration irregular light low lowpoly mesh modern mosaic multi multicolor multicolored network orange origami pale pastel pattern pink poly polygon polygonal rainbow rectangle shape sharp soft spectrum strip structure tessellated tessellating tessellation trend trendy triangle triangular varicolored variegated vector wallpaper white yellow