diff --git a/static/xkcd.css b/static/xkcd.css
index 017d0b2..7c09d09 100644
--- a/static/xkcd.css
+++ b/static/xkcd.css
@@ -1,3 +1,7 @@
+/* 
+	data taken from the xkcd color survey:
+	https://xkcd.com/color/rgb/
+*/
 :root {
 	--xkcd-cloudy-blue: #acc2d9;
 	--xkcd-dark-pastel-green: #56ae57;