I made something similar as well (that includes both 3.11, 95, 2000, XP, CDE and Mac OS 9, and also all the default color schemes of those): https://nielssp.github.io/classic-stylesheets/?theme=win9x&s...

My focus was not so much on pixel perfect, but instead on creating something that would also work and look aesthetically pleasing on modern systems, like with higher DPI monitors and such. So one of the the things I did was to recreate all the icons and symbols in SVG.

I tried posting it as a Show HN when I added XP and Mac OS 9, but it didn't get much attention. Maybe the title of the project isn't as catchy.