diff --git a/css/Apple-Classic.css b/css/Apple-Classic.css
index d7ed38e24b..e86479ff14 100644
--- a/css/Apple-Classic.css
+++ b/css/Apple-Classic.css
@@ -20,6 +20,8 @@
   --red: #c91b00;
   --black: #000000;
   --name: 'Apple Classic';
+  --Luma: 0.169461176470588;
+  --Contrast: 0.462484705882353;
   --IsBright: 0;
   --IsDark: 1;
 }