House colors: White, gray and some other color to make a pop!
Easy Upholstered DIY Headboard Tutorial - Sawdust and Embryos
DIY: diamond tufted headboard
Why didn't I think of this? I couldn't find the tutorial, but I imagine that you just need to use plywood, fabric of your choice, staple gun, wood glue, and an extra sheet of plywood to put the squares up against. Looks simple enough! Next project?!