Depending on the item type (except for userlist - refer to Color node below),
it can specify its color, font, or image via the following tags:
normal - normal state.
active - when the item has active focus.
prelight - when the mouse is hovering over the
item.
When item is "rect" (alpha can be omitted and defaults to 0.0):
<normal color="#ffffff" alpha="0.0">
When item is "label":
<normal color="#ffffff" font="Sans 14"/>
When the item type is "pixmap" or "SVG", then the normal, active,
and prelight tags specify the images to use as follows:
<normal file="picture.png" tint="#dddddd"/>
Note that relative pathnames are assumed to be in the same
directory as the theme .xml file in
<share>/gdm/themes/<theme_name>.
