[gnome-calculator] styling: lighter history background

[Robert Roth <robertroth src gnome org>]

commit 4f12fbaaed04a455726f31c34fd7d9d7a1acc661
Author: Robert Roth <robert roth off gmail com>
Date:   Thu Oct 20 14:12:59 2016 +0300

    styling: lighter history background

 data/calculator.css |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/data/calculator.css b/data/calculator.css
index e802e6b..7a3c96a 100644
--- a/data/calculator.css
+++ b/data/calculator.css
@@ -39,12 +39,15 @@ window > grid {
 .bit-marker-label {
 }
 
-.history-view {
-  background-color: @insensitive_bg_color;
+.history-view, .history-entry {
+  background-color: shade(@theme_base_color, .95);
+}
+
+.history-view:backdrop, .history-entry:backdrop {
+  background-color: shade(@theme_unfocused_base_color, .97);
 }
 
 .history-entry {
-  background-color: @insensitive_bg_color;
   border-top: 1px groove @borders;
   padding: 6px 3px;
   font-size: 15px;