Adminhtml uses the same theaming mathod as the we do on frontend. We need to do two things 1. We need to only declare a custom template theme for your installation in module config.xml: Add following code in -> app/etc/config.xml <stores> <admin> <design> <theme> <template>custom_theam_name</template> </theme> </design> </admin> </stores> 2.Then you need to create directory