--- a/src/pyams_skin/resources/less/forms.less	Thu Jul 19 02:07:58 2018 +0200
+++ b/src/pyams_skin/resources/less/forms.less	Thu Jul 19 16:32:09 2018 +0200
@@ -794,6 +794,7 @@
 
 			&.switched {
 				border: 1px solid transparent;
+				background-color: transparent;
 			}
 			>legend {
 				width: auto;