[gnome-themes-standard] highcontrast: update trough bg color

[Cosimo Cecchi <cosimoc src gnome org>]

commit 76504ec0fccb754ec9c495ea36fa1facc362ed9f
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Tue Apr 24 16:38:31 2012 -0400

    highcontrast: update trough bg color

 themes/a11y-base.css |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/themes/a11y-base.css b/themes/a11y-base.css
index f67d537..e1706c4 100644
--- a/themes/a11y-base.css
+++ b/themes/a11y-base.css
@@ -79,7 +79,7 @@ GtkComboBox .separator {
 }
 
 .trough {
-    background-color: @theme_active_color;
+    background-color: @theme_scrollbar_trough;
     color: @theme_fg_color;
 }