xaml - Windows Phone 8.1 AppBarButton Template not editable -

i not able redefine template of appbarbutton inside bottomappbar in windows phone 8.1 project.

in visual studio xaml designer changes (it shows "button 2" text), when deploy phone or emulator, default template applied.

i tried right click control, "edit template", "edit copy...", it's not available. possible, redefine template?

my xaml code (just simplified example):

<page.bottomappbar>     <commandbar>         <commandbar.secondarycommands>             <appbarbutton                 label="button">                 <appbarbutton.template>                     <controltemplate>                         <textblock                             text="button 2" />                     </controltemplate>                 </appbarbutton.template>             </appbarbutton>         </commandbar.secondarycommands>     </commandbar> </page.bottomappbar> 

i have windows 8.1 pro visual studio community 2013 update 4 installed.

no, not possible customize app bar on windows phone 8.1 beyond foreground , background colors. on windows phone app bar system ui rather app ui.

if want customize app bar buttons can put them in custom panel docked @ bottom of page instead of in page.bottomappbar