[d-feet: 1/2] Fix format string with python3

[Thomas Bechtold <toabctl src gnome org>]

commit 9820e4e6d01b0cfac2e18d837f0a8580b6e49c68
Author: Guido Günther <agx sigxcpu org>
Date:   Sun Jul 22 10:47:23 2018 +0200

    Fix format string with python3
    
    See: !4
    
    Spotted-by: Johannes Sasongko

 src/dfeet/introspection_helper.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/dfeet/introspection_helper.py b/src/dfeet/introspection_helper.py
index 7edbdc4..d927d96 100644
--- a/src/dfeet/introspection_helper.py
+++ b/src/dfeet/introspection_helper.py
@@ -11,7 +11,7 @@ def fg_color():
     if _style_context is None:
         _style_context = Gtk.StyleContext()
         color = _style_context.get_color(Gtk.StateFlags.NORMAL)
-        _fg_color = "#%x%x%x" % (color.red * 255, color.green * 255, color.blue * 255)
+        _fg_color = "#%02x%02x%02x" % (int(color.red) * 255, int(color.green) * 255, int(color.blue) * 255)
     return _fg_color
 
 def args_signature_markup(arg_signature):