Bonus: the Classic look
amadeOS began as a new Common Desktop Environment, and that look is still there: the Front Panel with drawers, four named workspaces, Motif window frames and the backdrops of CDE. Choose Classic (CDE) in the login screen's session field or under Settings > Desktop look; the windows, the panel and the programs switch right away.
Front Panel

Workspaces

Windows

Colour

Backdrop
