Multiple depths

Rickmovie relies on the pseudo-color X11 Visual. This visual is the default on most Unix systems. On most current Unix platforms several visuals are supported. Unfortunately, Linux is only beginning to support multiple visuals. As a result you have to make a choice when you configure your Linux workstation. You must decide if you want to be able to run pseudo-color applications, and continuously run out of your colormap, or to run 16,24, or 32-bit systems, which provide plenty of colors, but are unable to pseudo-color applications. Hopefully, in a year or two, Linux's multi-visual ability will be mature. For now I have added rudimentary support for 16, 24, and 32 bit depths. Because the overlay functionality (only available with pseudo-color) is fundamental to the operation of Ricksep, the hacks I introduced degrade performance.