how many colors can urxvt support?

[Angelina Carlton]

Hello list

I have recently started using rxvt-unicode and really like some of the feature, like
beautiful looking fonts without as much overhead on my system compared to gnome-terminal 
for example.

I use it in emacs on a Debian Sid, rxvt-unicode (urxvt) v5.3 - released: 2005-03-13
I would like to take advantage of the font-lock colors in emacs and am wondering
if this terminal is capable showing more than 8 normal colors and 8 bolded colors.

urxvt --help shows my version is compiled with:

options: xft,styles,combining,blink,iso14755,unicode3,encodings=eu+vn+jp+jp-ext+kr+zh+zh-ext,
fade,XPM,transparent,tint,utmp,menubar,XIM,scrollbars=plain+rxvt+NeXT+xterm,frills,
24bit,selectionscrolling,wheel,slipwheel,smart-resize,cursorBlink,
pointerBlank,XGetDefaults

and the colors are (I am assuming 8 regular weight, 8 bold?)
color0 thru color15

If I need to recompile the debian package to add something that is not 
a problem but I dont know what to add.

I converted a jpeg to xpm and set it as the background and this
was no problem, showing a picture with lots of colors didnt
bother the terminal at all, so I am hoping it is some simple I need to
do, like set the colors up in ~/.Xdefaults? 

right now in emacs I can only set those 8 colors + bold so any further
help would be appreciated. 

Thank you!

-- 
Angelina Carlton

PS: is there an FAQ for this list?