[pygtk] [GTK3] get background color

[Yann Leboulanger]

Hi,

I'm trying to get the default / current background color of a textview. 
The code I do it:

context = tv.get_style_context()
color = context.get_background_color(Gtk.StateFlags.NORMAL)

But that returns a fully transparent color (0,0,0,0)

If I first set a custom color with tv.override_background_color(), then 
get_background_color() correctly works and returns the color I set.

So how can I get the current default color?

Thanks in advanced
-- 
Yann