GtkStyle::bg
Access: Read Write
Type: Array
    
     Returns an array of 5 background GdkColors used for the 
     different states
     a widget can reach. 
    
    
$newstyle = &new GtkStyle();
$newstyle->bg[GTK_STATE_PRELIGHT] = $newstyle->white;
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     Note that GtkLabel does not allow
     the background color to be changed, so you have to set the background of the 
     parent widget, e.g. the GtkButton.