Changing start menu colors in Human theme - Engines vs. gtkrc ?

[ariel]

Hello,
I am trying to change the colors of the start menu with gnomecc while using the default Human theme in Jaunty, but this doesn't fully work:

Code:

$ cat ~/.gtkrc-2.0-gnome-color-chooser
pixmap_path "/home/ariel/.gnome-color-chooser/images/"

style "gnome-color-chooser-startmenue"
{
  bg[NORMAL] = "#999999"     # This doesn't work
  bg[SELECTED] = "#FF0000"   # This doesn't work
  fg[NORMAL] = "#FF0000"     # This doesn't work
  fg[PRELIGHT] = "#00FF00"   # This doesn't work
  xthickness = 20                      # This works
  ythickness = 5                       # This works
  font_name = "Trebuchet MS Bold 11"   # This works
}
widget "GtkWindow.gnome-panel-main-menu*" style "gnome-color-chooser-startmenue"

Apparently the drawing is done by an Engine (murrine?), so I tried changing the Engine for the "Start Menue" in the last tab, to no effect. What now?