Extrasolar Livery: if I'm going to look at it, it should look good
The problem. If I'm going to look at my software, it might as well look good, or at least be pleasant to use. And we were already blasting off hard with the space theme.
What I built. A paint shop. Each livery is paint only (colors, type and decoration), written against a small, documented set of class names, so a page can change its whole look without changing its layout. There's the Spaceport look, a plain Light and Dark, animated backdrops of the sky, the Earth and the Moon, and open fonts I host myself.
Where it stands. This page wears it, and so does the Sb4ssport shelf. Pick a livery from the menu at the top.
What I learned. Separating paint from layout is what lets one page wear many looks.