diff --git a/templates/mail_prep_html.mustache b/templates/mail_prep_html.mustache
index c0190d1..9f0596f 100644
--- a/templates/mail_prep_html.mustache
+++ b/templates/mail_prep_html.mustache
@@ -27,7 +27,7 @@ This is what will be sent to your account:
     <label class="mdl-textfield__label" for="mail_body">Body</label>
   </div><br/>
 
-  <button type="submit" class="mdl-button mdl-js-button mdl-button--raised mdl-js-ripple-effect mdl-button--accent">Send</button>
+  <button type="submit" class="mdl-button mdl-js-button mdl-button--raised mdl-js-ripple-effect mdl-button--colored">Send</button>
 </form>
 </p>