more popup styling

luasrc/view/tasks/docker.htm

@@ -18,10 +18,10 @@ if self.task_start_failed then
 
 <%+cbi/map%>
 
-<div id="customModal" class="alert-message warning" style="display:none; text-align: center;">
+<div id="customModal" class="alert-message danger" style="display:none; text-align: center;">
     <strong style="text-transform: uppercase;">This will permanently delete your installation, are you sure?</strong>
     <br>
-    <input class="btn cbi-button cbi-button-apply" type="button" value="YES" onclick="proceedRemoval()" style="margin-right: 10px;">
+    <input class="btn cbi-button cbi-button-remove" type="button" value="YES" onclick="proceedRemoval()" style="margin-right: 10px;">
     <input class="btn cbi-button" type="button" value="NO" onclick="closeRemoveConfirmation()">
 </div>
 <div class="cbi-page-actions control-group">