Huhhh...So, I cant see that, because i use a wlm 9

But, maybe the 8.5 is cant use the
rgb code, so you write the background color like this:
Element[id=atom(idPSM)]
{
LayoutPos:Left;
Foreground:argb(255,0,0,0);
}
Maybe this is the good version for 8.5. If is not good, anybody can help you (when are read this topic

)
*EDIT: Read this:
×Colors. Messenger uses many different kinds of internal methods to reference color (using rcclr and rcbkg). Messenger Plus! decrypts all of them and replaces the color with the appropriate RGB code when possible. The alpha channel is also specified when used by a color. Remember that some colors are variations of the user's chosen color (blue by default) and thus, cannot be expressed in RGB code. In that case, a comment is added to show the intensity of the colorized color.
bordercolor:rcclr(46604) ® bordercolor:rgb(152,151,139)
background:rcbkd(1458) ® background:argb(128,255,255,255)
foreground:rcclr(20090) ® foreground:rcclr(20090) /* Colorized. I=128 */
...from the skinning documentation what is writed: Patchou
Or, you see that:
http://translate.google.com/translate?hl=en&sl=fr...2Bcolors%26hl%3Den
French site is translated to english

Maybe easier the english than french
