diff -r a80822efae47 -r 19635af1ecec src/pyams_thesaurus/zmi/templates/terms-tree.pt
--- a/src/pyams_thesaurus/zmi/templates/terms-tree.pt	Fri Dec 07 16:12:16 2018 +0100
+++ b/src/pyams_thesaurus/zmi/templates/terms-tree.pt	Fri Dec 28 10:13:41 2018 +0100
@@ -51,13 +51,13 @@
 											   style string:color: #${extract.color};"></i>
 						</div>
 					</tal:loop>
-					<span class="label label-success"
+					<span class="label"
 						  tal:define="term node.context;
 									  url tales:absolute_url(term);"
 						  tal:attributes="data-ams-url string:${url}/properties.html;
-										  class string:label label-success ${node.css_class};"
+										  class string:label ${node.css_class};"
 						  data-toggle="modal">
-						<i class="fa fa-lg fa-plus-circle"
+						<i class="fa fa-fw fa-plus-circle"
 						   data-ams-click-handler="PyAMS_thesaurus.tree.expand"
 						   data-ams-stop-propagation="true"
 						   tal:condition="node.has_children"></i>