Usage: .Set Colour <Type> <Foreground> <Background>
Allows you to set the colours used when your terminal is
set to 'colour'. Valid types are:
talk Normal conversation in the current group
tell Conversation to a specific user or group
list Conversation carried out on a list.
listname The name of lists inside { }
shout Shouted text, seen in all groups
message Messages from the talker, help etc.
nick The colour a user's name gets highlighted
if they mention you.
me Your own name when you talk.
Valid colours are:
black, red, green, yellow, blue, magenta, cyan, white.
Colours can be prefixed with "br" to make a brighter version.