[gitg] Make the hunk color like github's one and improve dark version

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 227a60e185e592822c2d1537bc25fedff996d47a
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Mon Dec 21 08:35:29 2015 +0100

    Make the hunk color like github's one and improve dark version

 libgitg/gitg-diff-view-file.vala |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/libgitg/gitg-diff-view-file.vala b/libgitg/gitg-diff-view-file.vala
index 3d48bf9..4be05f2 100644
--- a/libgitg/gitg-diff-view-file.vala
+++ b/libgitg/gitg-diff-view-file.vala
@@ -227,13 +227,13 @@ class Gitg.DiffViewFile : Gtk.Grid
 
                if (settings.gtk_application_prefer_dark_theme)
                {
-                       header_attributes.background = Gdk.RGBA() { red = 224.0 / 255.0, green = 239.0 / 
255.0, blue = 1.0, alpha = 1.0 };
+                       header_attributes.background = Gdk.RGBA() { red = 136.0 / 255.0, green = 138.0 / 
255.0, blue = 133.0 / 255.0, alpha = 1.0 };
                        added_attributes.background = Gdk.RGBA() { red = 164.0 / 255.0, green = 0.0, blue = 
0.0, alpha = 1.0 };
                        removed_attributes.background = Gdk.RGBA() { red = 78.0 / 255.0, green = 154.0 / 
255.0, blue = 6.0 / 255.0, alpha = 1.0 };
                }
                else
                {
-                       header_attributes.background = Gdk.RGBA() { red = 224.0 / 255.0, green = 239.0 / 
255.0, blue = 1.0, alpha = 1.0 };
+                       header_attributes.background = Gdk.RGBA() { red = 244.0 / 255.0, green = 247.0 / 
255.0, blue = 251.0 / 255.0, alpha = 1.0 };
                        added_attributes.background = Gdk.RGBA() { red = 220.0 / 255.0, green = 1.0, blue = 
220.0 / 255.0, alpha = 1.0 };
                        removed_attributes.background = Gdk.RGBA() { red = 1.0, green = 220.0 / 255.0, blue = 
220.0 / 255.0, alpha = 1.0 };
                }