Changing the color of notebook tabs

[daniel ibnetwork com br]

	I'm trying to make a GTK+ theme, using the Xenophilia engine and
changing some colors... How can I change the color of the notebook tabs?
It's inheriting the color from something else (button? menu?), so I'm
attaching my .gtkrc so you can see its' widgets hierarchy. Thanks.

-- 
[]'s
Daniel Serodio <daniel@ibnetwork.com.br> | UIN: 2960503
style "xeno_default" {
    font = "-misc-infernal-medium-r-normal--12-120-75-75-p-56-iso8859-1"

    fg[NORMAL]      = "#ffffff"
    fg[PRELIGHT]    = "#ffffff"
    fg[ACTIVE]      = "#ffffff"
    fg[SELECTED]    = "#ffffff"
    fg[INSENSITIVE] = "#000000"
  
    bg[ACTIVE]      = "#550066"
    bg[NORMAL]      = "#5e5e5e"
    bg[PRELIGHT]    = "#550066"
    bg[SELECTED]    = "#550066"
    bg[INSENSITIVE] = "#5e5e5e"
  
    base[NORMAL]      = "#424242"
    base[PRELIGHT]    = "#550066"
    base[ACTIVE]      = "#550066"
    base[SELECTED]    = "#550066"
    base[INSENSITIVE] = "#5e5e5e"
  
    engine "xeno" {
  	thin			= true
  	scrollbar_knob		= dimple
  	scrollbar_width		= 12
  	stepper_ends		= false
  	stepper_arrows		= false
  	stepper_box		= true
	shine			= 1.5
	shade			= 0.587
	handle_knob		= buds
	paned_knob		= lines
    }
}

style "xeno_list" {
    base[ACTIVE]      = "#5e5e5e"
}

style "xeno_button" {
    bg[ACTIVE]      = "#550066"
    bg[NORMAL]      = "#5e5e5e"
    bg[PRELIGHT]    = "#550066"
    bg[SELECTED]    = "#550066"
    bg[INSENSITIVE] = "#5e5e5e"
    fg[INSENSITIVE] = "#000000"
    engine "xeno" {
	shade		= 0.6666667
    }
}

style "xeno_menu" {
    bg[PRELIGHT]    = "#550066"
}

style "xeno_range" = "xeno_button" {
    bg[ACTIVE]      = "#424242"
}

style "xeno_infobar" {
    bg[NORMAL]      = "#5e5e5e"
}


class "GtkWidget"		style "xeno_default"
class "GtkList"			style "xeno_list"
class "GtkTree"			style "xeno_list"
class "GtkCList"		style "xeno_list"
class "GtkCTree"		style "xeno_list"
class "GtkButton"		style "xeno_button"
class "GtkSpinButton"		style "xeno_button"
class "GtkRange"		style "xeno_range"
class "GtkProgress"		style "xeno_infobar"
class "GtkStatusbar"		style "xeno_infobar"
class "GtkMenuItem"		style "xeno_menu"
class "GtkMenu"			style "xeno_menu"
widget "gtk-tooltips*"		style "xeno_tooltips"