[gtk+] gtk: make the .trough background-color darker() as it was in GTK+ 2.x

[Michael Natterer <mitch src gnome org>]

commit 330158977dea09cb82ba851ddbbdcb6ab9d8f469
Author: Michael Natterer <mitch gimp org>
Date:   Sun Feb 6 13:48:42 2011 +0100

    gtk: make the .trough background-color darker() as it was in GTK+ 2.x

 gtk/gtkcssprovider.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkcssprovider.c b/gtk/gtkcssprovider.c
index 578dbd6..2de3a8a 100644
--- a/gtk/gtkcssprovider.c
+++ b/gtk/gtkcssprovider.c
@@ -3903,6 +3903,7 @@ gtk_css_provider_get_default (void)
         "}\n"
         "\n"
         ".trough {\n"
+        "  background-color: darker (@bg_color);\n"
         "  border-style: inset;\n"
         "  border-width: 1;\n"
         "  padding: 0;\n"