diff --git a/themes/tiddlywiki/vanilla/base.tid b/themes/tiddlywiki/vanilla/base.tid
index 145c5f2aa..774e3ee69 100644
--- a/themes/tiddlywiki/vanilla/base.tid
+++ b/themes/tiddlywiki/vanilla/base.tid
@@ -334,6 +334,10 @@ table tfoot tr td {
 	height: 600px;
 }
 
+:root {
+	color-scheme: {{{ [{$:/palette}get[color-scheme]] ~light }}};
+}
+
 /*
 ** Links
 */