irssi/docs/formats.txt

 Irssi's colors that you can use in text formats etc. :

                           text            text            background
   ---------------------------------------------------------------------
   %k      %K      %0      black           bold black      black
   %r      %R      %1      red             bold red        red
   %g      %G      %2      green           bold green      green
   %y      %Y      %3      yellow          bold yellow     yellow
   %b      %B      %4      blue            bold blue       blue
   %m      %M      %5      magenta         bold magenta    magenta
   %p      %P              magenta (think: purple)
   %c      %C      %6      cyan            bold cyan       cyan
   %w      %W      %7      white           bold white      white
   %n                      Turn off all colors and other formatting
   %U                      Underline on/off
   %8                      Reverse on/off
   %9      %_              Bold on/off
   %:                      Insert newline
   %|                      Marks the indentation position
   %%                      A single %

 MIRC colors that you can use when writing text to channel and with
 hilighting text:

               foreground          background
   -------------------------------------------------------
	0          white               black
	1          ligh gray           ---
	2          blue                blue
	3          green               green
	4          light red           ---
	5          orange              orange
	6          magenta (purple)    magenta
	7          red                 red
	8          yellow              ---
	9          light green         ---
   10          cyan                cyan
   11          light cyan          ---
   12          light blue          ---
   13          light magenta       ---
   14          gray                black on black 
   15          light gray          black on black
                                   gray  on light gray (with bold)

 These colors may differ depending on your terminal.

 How to use these colors ('#' means a number as color code):
 
 <Ctrl>-b        set bold
 <Ctrl>-c#[,#]   set foreground and optionally background color
 <Ctrl>-o        reset all formats to plain text
 <Ctrl>-v        set inverted color mode
 <Ctrl>-_        set underline
 <Ctrl>-7        same as <Ctrl>-_
 
 To reset a mode set it again, f.e.
   <Ctrl>-c3<Ctrl>-vFOO<Ctrl>-vBAR
 creates black on green FOO followed by a green on black BAR