Change for left view of workspace color

tracim/tracim/templates/widgets/left_menu.mak

 <%namespace name="ICON" file="tracim.templates.widgets.icon"/>
 
 <%def name="TREEVIEW(dom_id, selected_id='', uniq_workspace='0', css_classes='t-spacer-above')">
-    <h4 class="t-less-visible t-spacer-above textMenuColor">${_('Workspaces')}</h4>
+    <h4 class="t-spacer-above textMenuColor">${_('Workspaces')}</h4>
     <div id="sidebarleft_menu"></div>
     <script src="${tg.url('/assets/js/sidebarleft.js')}"></script>
     <script>
       })()
     </script>
 </%def>
-