[dconf-editor] Make help message lighter.

[Arnaud Bonatti <arnaudb src gnome org>]

commit 78bbfa45b7c6b767c9ed4e86c02145eeae863c75
Author: Arnaud Bonatti <arnaud bonatti gmail com>
Date:   Mon Jul 18 03:04:34 2016 +0200

    Make help message lighter.

 editor/registry-info.vala |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/editor/registry-info.vala b/editor/registry-info.vala
index cab9e81..a60d2be 100644
--- a/editor/registry-info.vala
+++ b/editor/registry-info.vala
@@ -199,7 +199,9 @@ class RegistryInfo : Grid
         label.max_width_chars = 59;
         label.wrap = true;
         label.halign = Align.START;
-        label.get_style_context ().add_class ("italic-label");
+        StyleContext context = label.get_style_context ();
+        context.add_class ("italic-label");
+        context.add_class ("greyed-label");
         return (Widget) label;
     }
 }