diff --git a/app/assets/javascripts/calendar_widget2.js b/app/assets/javascripts/calendar_widget2.js
index eff96bc..93a368a 100644
--- a/app/assets/javascripts/calendar_widget2.js
+++ b/app/assets/javascripts/calendar_widget2.js
@@ -520,8 +520,9 @@
         })
         var clicked_color = dom.find('.w-calendar-event').css('background-color')
         if (clicked_color){
-          clicked_color = lighten_color(rgb2hex(clicked_color),-45)
-          if (clicked_color!='#000000'){
+          var hex_color = rgb2hex(clicked_color)
+          if (hex_color != '#000000'){
+            clicked_color = lighten_color(hex_color,-45)
             dom.find('table').append($('<style>.widget-calendar-2 table.w-calendar-table .w-calendar-toggle{ background-color:'+clicked_color+';color: white;}</style>'))
           }
         }