For the benefit of BitchX users, I've placed a fragment of BitchX code to reformat RoboMonk CB msgs differently from regular users' messages at:

http://dalnet-perl.org/converter/robomonk-bx-on.txt

The output looks similar to this:

update: Wouldn't it be nice if BitchX were, you know, documented?

At any rate, the 'on' snaglet I posted has a slight annoyance factor: it interprets %<character or digit> as a display attribute sequence (the heads of hash definitions in msgs are eaten up and cause the fg and/or bg color to be changed). I've been toying with a solution, but the documentation is useless. I'll include a fix as soon as I figure it out. In the meantime, if you know more about bx scripting than I do and know how to fix the problem, please share.