diff --git a/github-dark.css b/github-dark.css
index ce715f327..d9d6f09a9 100644
--- a/github-dark.css
+++ b/github-dark.css
@@ -925,13 +925,13 @@
     background-color: #333 !important;
     border-color: #484848 !important;
   }
-  /* contribution calender and blame heats */
+  /* contribution calendar and blame heats */
   .heat, .contrib-legend li, #contributions-calendar rect[fill="#d6e685"],
   #contributions-calendar rect[fill="#8cc665"],
   #contributions-calendar rect[fill="#44a340"],
   #contributions-calendar rect[fill="#1e6823"] {
-    background-color: /*[[base-color]]*/ #5af !important;
-    fill: /*[[base-color]]*/ #5af !important;
+    background-color: #fff !important;
+    fill: #fff !important;
   }
   /* halloween colors */
   #contributions-calendar rect[fill="#FFEE4A"],