SGI IRIX is a pastel-land which I'm very fond of: http://toastytech.com/guis/irix.html http://toastytech.com/guis/irix.html It's more muted, but follows the p

SGI IRIX is a pastel-land which I'm very fond of: http://toastytech.com/guis/irix.html http://toastytech.com/guis/irix.html It's more muted, but follows the principle of "let's use these truecolor hues now that we've got them." The global fashion trend after 1990 was moving away from bright pure colors and towards increasingly muted pastels. So for examples of more bright-colored UIs on 256-color displays, I think the Mac II / System 6 era would be the place to look. Early CD-ROMs might be a rich vein.