User blog comment:Susanolivia/Fixed Width, Sidebar, and the Removal of Monaco/@comment-1773235-20101002045634/@comment-761251-20101002062754

Resa1983, you're right. The Monaco themes used to set classes like "color1" or "color2" or "accent" that you could use to easily customize your wiki to work with any theme; those seem to be absent in Oasis.