Here is a background image made with crosshatching and dark saturated colors.

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Size: 5000px × 3928px
Location: USA
Photo credit: © Robert Goebel / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: abstract, art, artistic, backdrop, background, backgrounds, banner, beautiful, blank, blue, business, checkout, color, concept, crystal, decoration, decorative, design, digital, element, elements, facet, form, geometric, gradient, graphic, gray, green, illustration, isolated, light, line, machine, modern, mosaic, paper, particle, pattern, poly, polygon, red, shape, space, template, texture, triangle, wallpaper, web, wireless