[gnome-control-center] background: Add black background color

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit bb3ff84929550fb00b8a31d458514df853e17357
Author: trey <trey tabner com>
Date:   Wed Feb 15 03:49:00 2017 -0200

    background: Add black background color
    
    https://bugzilla.gnome.org/show_bug.cgi?id=778648

 panels/background/bg-colors-source.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/panels/background/bg-colors-source.c b/panels/background/bg-colors-source.c
index f46acb6..3d0b4ad 100644
--- a/panels/background/bg-colors-source.c
+++ b/panels/background/bg-colors-source.c
@@ -40,6 +40,7 @@ struct {
   int orientation;
   const char *pcolor;
 } items[] = {
+  { G_DESKTOP_BACKGROUND_SHADING_SOLID, -1, "#000000" },
   { G_DESKTOP_BACKGROUND_SHADING_SOLID, -1, "#db5d33" },
   { G_DESKTOP_BACKGROUND_SHADING_SOLID, -1, "#008094" },
   { G_DESKTOP_BACKGROUND_SHADING_SOLID, -1, "#5d479d" },