[gnome-calendar] month-cell: draw out-of-month cell day labels differently

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 2357f5d7666e48fb78a49b4be9994b1a51fc3c87
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sat Oct 7 11:41:00 2017 -0300

    month-cell: draw out-of-month cell day labels differently

 data/theme/gtk-styles.css |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/data/theme/gtk-styles.css b/data/theme/gtk-styles.css
index a5f75ee..01e5bfb 100644
--- a/data/theme/gtk-styles.css
+++ b/data/theme/gtk-styles.css
@@ -443,6 +443,10 @@ monthcell label {
     font-size: 0.9rem;
 }
 
+monthcell.out-of-month label {
+    color: alpha(@theme_fg_color, 0.66);
+}
+
 monthcell:hover:not(.out-of-month) {
     background-color: @theme_bg_color;
     transition: background-color 200ms;