Earlier quoted context omitted.
The fact that your designs "don't work" is very disconcerting - given that we've spent 20 years trying to separate function from design. Does this mean that after 20 years that we still don't have a good clean separation?
Another comment in this thread mentioned a similar project, a Swing "napkin" theme, which managed a rough look as normal styling. So I guess Swing did something better than HTML/CSS - from skimming the comments i gathered that this library had to reimplement everything from scratch using SVG/Canvas.
I guess we still need a few more years of catching up.