diff --git a/wgui/doc/widgets.md b/wgui/doc/widgets.md
index 4878f2cc..24817b15 100644
--- a/wgui/doc/widgets.md
+++ b/wgui/doc/widgets.md
@@ -356,6 +356,8 @@ _Translated by key_
 
 `box_size`: **float** (default: 24)
 
+`color_checked`: #FFAABB | #FFAABBCC
+
 `value`: **string**
 
 _optional value that will be sent with internal events_