diff --git a/styles/src/themes/common/syntax.ts b/styles/src/themes/common/syntax.ts
index 925ed7e5c14ba1308fee179113879c13db25d344..1645aaea873f4c5fde0eb7ca49a82a4781dc2ab5 100644
--- a/styles/src/themes/common/syntax.ts
+++ b/styles/src/themes/common/syntax.ts
@@ -4,7 +4,7 @@ import { ColorScheme } from "./colorScheme"
 import chroma from "chroma-js"
 
 export interface SyntaxHighlightStyle {
-    color: string
+    color?: string
     weight?: FontWeight
     underline?: boolean
     italic?: boolean