[accerciser] Fix background color of relations

[Samuel Thibault <sthibaul src gnome org>]

commit 664f2c7c08b2d61947f0e2fac90a47caffee3bb7
Author: Samuel Thibault <samuel thibault ens-lyon org>
Date:   Fri May 17 15:07:04 2019 +0200

    Fix background color of relations

 plugins/interface_view.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/plugins/interface_view.py b/plugins/interface_view.py
index 56631fb..3971be1 100644
--- a/plugins/interface_view.py
+++ b/plugins/interface_view.py
@@ -319,7 +319,7 @@ class _SectionAccessible(_InterfaceSection):
     # preset the different bg colors
     style = self.relations_view.get_style_context()
     self.header_bg = style.get_background_color(gtk.StateFlags.NORMAL).to_string()
-    self.relation_bg = style.get_color(gtk.StateFlags.NORMAL).to_string()
+    self.relation_bg = style.get_background_color(gtk.StateFlags.NORMAL).to_string()
 
     selection = self.relations_view.get_selection()
     selection.set_select_function(self._relationSelectFunc, None)