diff --git a/_config.yml b/_config.yml
index 1a7fb6c..dddef3c 100644
--- a/_config.yml
+++ b/_config.yml
@@ -43,11 +43,11 @@ avatar: "/img/avatar-icon.png"
 # By default, the navigation bar and footer have a light gray background, and the main page
 # has a white background. You can specify a different background colour or a background image
 # for the navigation bar, the main page, and the footer.
-# navbar-col: orange
+# navbar-col: "orange"
 # navbar-img: "/img/bgimage.png"
-# footer-col: blue
+# footer-col: "blue"
 # footer-img: "/img/bgimage.png"
-# page-col: #FF0000
+# page-col: "#FF0000"
 # page-img: "/img/bgimage.png"
 
 # --- Footer options --- #