[gnome-themes-standard] tooltips: ensure tooltip children get a transparent background

[Cosimo Cecchi <cosimoc src gnome org>]

commit 67396721bb303b4a83db21421757bdfcd4b36e65
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Tue Apr 3 09:57:54 2012 -0400

    tooltips: ensure tooltip children get a transparent background
    
    Since the background of the tooltip is semi-transparent, its children
    must be transparent too, or it will look bad.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=673364

 themes/Adwaita/gtk-3.0/gtk-widgets.css |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/themes/Adwaita/gtk-3.0/gtk-widgets.css b/themes/Adwaita/gtk-3.0/gtk-widgets.css
index fe7c1b2..b26332f 100644
--- a/themes/Adwaita/gtk-3.0/gtk-widgets.css
+++ b/themes/Adwaita/gtk-3.0/gtk-widgets.css
@@ -115,7 +115,7 @@ GtkWindow:backdrop {
 }
 
 .tooltip * {
-    background-color: alpha(@theme_tooltip_bg_color, 0.90);
+    background-color: transparent;
 }
 
 /*****************