diff --git a/doc/api/embed_parameters.md b/doc/api/embed_parameters.md
index 58730566..7f84f064 100644
--- a/doc/api/embed_parameters.md
+++ b/doc/api/embed_parameters.md
@@ -36,6 +36,13 @@ Default: "unnamed"
 
 Example: `userName=Etherpad%20User`
 
+## userColor
+ * String (css hex color value)
+
+Default: randomly chosen by pad server
+
+Example: `userColor=%23ff9900`
+
 ## noColors
  * Boolean