[gnome-themes-standard] gtk3: improve style of GtkScale's trough (dark variant)

[Cosimo Cecchi <cosimoc src gnome org>]

commit cb68b222974a55d78414abcf36c5e17ca991aca7
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Tue Apr 9 16:18:12 2013 -0400

    gtk3: improve style of GtkScale's trough (dark variant)
    
    https://bugzilla.gnome.org/show_bug.cgi?id=695563

 themes/Adwaita/gtk-3.0/gtk-main-dark.css |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/themes/Adwaita/gtk-3.0/gtk-main-dark.css b/themes/Adwaita/gtk-3.0/gtk-main-dark.css
index 04823a8..d3cc2d6 100644
--- a/themes/Adwaita/gtk-3.0/gtk-main-dark.css
+++ b/themes/Adwaita/gtk-3.0/gtk-main-dark.css
@@ -91,9 +91,9 @@
 @define-color internal_element_prelight #eeeeee;
 @define-color internal_element_insensitive mix(@internal_element_color, @theme_base_color, 0.65);
 
- define-color scale_trough_bg_a @borders;
+ define-color scale_trough_bg_a shade(@borders, 1.15);
 @define-color scale_trough_bg_b shade(@theme_bg_color, 0.95);
- define-color scale_shadow @theme_bg_color;
+ define-color scale_shadow shade(@theme_bg_color, 1.08);
 @define-color scale_progress_fill #2c85e2;
 @define-color scale_highlight_border #182f4c;
 @define-color scale_highlight_bg #356599;