Something

 style "panel"
{
 fg[NORMAL] = "#ffffff"
 fg[PRELIGHT] = "#ffffff"
 fg[ACTIVE] = "#ffffff"
 fg[SELECTED] = "#ffffff"
# fg[INSENSITIVE] = "#8A857C"
# bg[NORMAL] = "#000000"
# bg[PRELIGHT] = "#000000"
# bg[ACTIVE] = "#000000"
# bg[SELECTED] = "#000000"
# bg[INSENSITIVE] = "#EFEFEF"
# base[NORMAL] = "#ffffff"
# base[PRELIGHT] = "#EFEFEF"
# base[ACTIVE] = "#D0D0D0"
# base[SELECTED] = "#DAB566"
# base[INSENSITIVE] = "#E8E8E8"
# text[NORMAL] = "#161616"
# text[PRELIGHT] = "#000000"
# text[ACTIVE] = "#000000"
# text[SELECTED] = "#ffffff"
# text[INSENSITIVE] = "#8A857C"
}
style "panelbuttons" = "default"
{
    xthickness                  = 2
    ythickness                  = 1

    GtkWidget::focus_padding    = 2
    fg[NORMAL]                  = "#ffffff"
    text[NORMAL]                = "#ffffff"
    engine "pixmap" {
        image
        {
            function            = BOX
            recolorable         = TRUE
            state               = NORMAL
            file                = "/home/paladine/button_bg.png"
            border              = { 10, 10, 10, 10 }
            stretch             = TRUE
        }
        image
        {
            function            = BOX
            recolorable         = TRUE
            state               = PRELIGHT
            file                = "/home/paladine/button_bg.png"
            border              = { 10, 10, 10, 10 }
            stretch             = TRUE
        }
        image
        {
            function            = BOX
            recolorable         = TRUE
            shadow              = OUT
            state               = PRELIGHT
            file                = "/home/paladine/button_bg.png"
            border              = { 10, 10, 10, 10 }
            stretch             = TRUE
            overlay_file       = "/home/paladine/button_bg.png"
            overlay_border     = { 4, 4, 4, 4 }
            overlay_stretch    = TRUE
        }
        image
        {
            function            = BOX
            recolorable         = TRUE
            shadow              = IN
            state               = PRELIGHT
            file                = "/home/paladine/button_bg.png"
            border              = { 10, 10, 10, 10 }
            stretch             = TRUE
            overlay_file       = "/home/paladine/button_bg.png"
            overlay_border     = { 4, 4, 4, 4 }
            overlay_stretch    = TRUE
        }
        image
        {
            function            = BOX
            recolorable         = TRUE
            state               = ACTIVE
            file                = "/home/paladine/button_bg.png"
            border              = { 10, 10, 10, 10 }
            stretch             = TRUE
        }  
        image
        {
            function            = BOX
            recolorable         = TRUE
            state               = INSENSITIVE
            file                = "/home/paladine/button_bg.png"
            border              = { 10, 10, 10, 10 }
            stretch             = TRUE
        }
    }
}
widget_class "*Panel*GtkToggleButton" style "panelbuttons"
widget_class "*Panel*GtkButton" style "panelbuttons"

widget "*PanelWidget*" style "panel"
widget "*PanelApplet*" style "panel"
class "*Panel*" style "panel"
widget_class "*Mail*" style "panel"
class "*notif*" style "panel"
class "*Notif*" style "panel"
class "*Tray*" style "panel"
class "*tray*" style "panel"