It's using profiles (e.g. profile.fillColor); I suggest using a GuiShowImgCtrl instead.
PHP Code:
new GuiShowImgCtrl("Interface_HealthEmpty") {
image = "hpempty.png";
width = 100;
height = 20;
new GuiShowImgCtrl("Interface_Health") {
image = "hpfull.png";
width = (100 / clientr.hp_max) * clientr.hp_cur;
height = 20;
}
}