If run with no arguments,
hs-opc-client sets the string color to all
white. If run with one argument, the argument must be one of the
color names black, blue, cyan, green, magenta, orange, purple, red,
white, yellow, or random. If run with three arguments, each argument
must be an integer between 0-255, forming an RGB triple.
Various command-line options exist for setting the server to connect
to, setting the brightness, etc. For details, run with
For more information, see my blog post.