colorful diagonal squares seamless geometric pattern

backdrop background backgrounds block brick bricks bright colored colorful colors coloured colourful decor decoration decorative design diagonal diagonals diamond diamonds floor geometric graphic graphics grid line lines modern mosaic motif paper pattern print rainbow rectangle rectangles rectangular repeat repeating repetition repetitive retro seamless shape shapes square squared squares strip striped stripes structure style stylized surface textile texture textures tile tileable tiled tiles wall wallpaper wrapping zag zig zigzag