Patch from ticket #54. This is available in subversion from revision 1047 is in 1.2.5 and 1.3.3.

It simply adds a new config option ".colour" to fields. Use as follows:

foo.label total
foo.draw LINE2
foo.colour 000000

NOTE: The use of "rrggbb" instead of "#rrggbb" in the colour field!

Example at http://www.eltanin.net/munin/behemoth/behemoth-custom_processes.html