[gtk+] Adwaita: set the right background color for message dialogs

[Lapo Calamandrei <lapo src gnome org>]

commit f07ac793fea9a76605f5c6a7b86015377a98ffc3
Author: Lapo Calamandrei <calamandrei gmail com>
Date:   Wed Jan 28 18:19:20 2015 +0100

    Adwaita: set the right background color for message dialogs

 gtk/theme/Adwaita/_common.scss      |    6 ++++++
 gtk/theme/Adwaita/gtk-contained.css |    2 ++
 2 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/gtk/theme/Adwaita/_common.scss b/gtk/theme/Adwaita/_common.scss
index bdf1c6b..44596e2 100644
--- a/gtk/theme/Adwaita/_common.scss
+++ b/gtk/theme/Adwaita/_common.scss
@@ -2779,6 +2779,12 @@ GtkCalendar {
 
 .message-dialog { // Message Dialog styling
   -GtkDialog-button-spacing: 0;
+
+  @if $variant==light {
+    // the bright variant as a slightly darker bg which in this case clashes with the window decoration, 
overriding
+    &.background { background-color: $bg_color; }
+  }
+
   .titlebar {
     border-style: none;
     box-shadow: inset 0 1px $borders_edge;
diff --git a/gtk/theme/Adwaita/gtk-contained.css b/gtk/theme/Adwaita/gtk-contained.css
index 26a1f6e..ce7c34f 100644
--- a/gtk/theme/Adwaita/gtk-contained.css
+++ b/gtk/theme/Adwaita/gtk-contained.css
@@ -3972,6 +3972,8 @@ GtkCalendar {
 
 .message-dialog {
   -GtkDialog-button-spacing: 0; }
+  .message-dialog.background {
+    background-color: #ededed; }
   .message-dialog .titlebar {
     border-style: none;
     box-shadow: inset 0 1px white; }