[gnome-builder] glade: update theme for Adwaita

[Christian Hergert <chergert src gnome org>]

commit 1c8b44fe9c612698490279e6d8fa80816938bad0
Author: Christian Hergert <chergert redhat com>
Date:   Sun Oct 21 18:58:43 2018 -0700

    glade: update theme for Adwaita

 src/plugins/glade/themes/Adwaita.css | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/src/plugins/glade/themes/Adwaita.css b/src/plugins/glade/themes/Adwaita.css
index f7efb392b..c34e9a5df 100644
--- a/src/plugins/glade/themes/Adwaita.css
+++ b/src/plugins/glade/themes/Adwaita.css
@@ -4,6 +4,9 @@
 gbpgladeview viewport {
   background-color: #f6f7f8;
   background-size: 8px 8px;
-  background-image: repeating-linear-gradient(0deg, #f0f1f2, #f0f1f2 1px, transparent 1px, transparent 8px),
-                    repeating-linear-gradient(-90deg, #f0f1f2, #f0f1f2 1px, transparent 1px, transparent 
8px);
+  background-image: repeating-linear-gradient(0deg, rgba(.125,.125,.125,.025), rgba(.125,.125,.125,.025) 
1px, transparent 1px, transparent 8px),
+                    repeating-linear-gradient(-90deg, rgba(.125,.125,.125,.025), rgba(.125,.125,.125,.025) 
1px, transparent 1px, transparent 8px);
+}
+.glade-chooser {
+  background-color: #f6f7f8;
 }