Windows 95, released 24 August 1995: a desktop, a taskbar, a Start button, and a visual language nobody named. Grey #C0C0C0 everywhere, one-pixel two-tone bevels, a navy title bar with bold white bitmap text, a teal desktop, dotted focus rectangles, and 32 by 32 icons in the sixteen VGA colours.
The target was 640 by 480 at 256 colours on a 96 dpi screen, and bevels gave affordance without needing colour. Icons had sixteen colours and a one-bit mask, so skin was a checker of yellow and white. The research note calls this the straight version of the look; vaporwave, further along the wall, is the remix.
Drawn at one unit per pixel with no lo canvas. The chrome is a bevel helper: face, highlight top-left, shadow and dark shadow bottom-right, raised or sunken. The figure is rasterised at 32 by 32 and quantised to VGA, skin dithered, then shown at seven times in a Paint window and once on the desktop under a dotted focus rectangle.