Ok, I'm pretty sure that I've got the coding down fine, but every time I actually test it in game, all I get is a solid black bubble. No visible text, no visible border, and no transparency. Even using just 6 character hex code for the colors doesn't help.
Here's a sample bind:
ENTER "beginchat <bgcolor ff0000><color 00006f><border 00af00>"
F6 "local <color 00006f><border 00af00><bgcolor ff0000>Run, Run, RUN!"
Now neither of these has black in it, so obviously there's a problem somewhere, but I'll be gajiggered if I can find it. Any and all help greatly appreciated.