In
/magento1/app/design/frontend/base/default/layout/instagramapi.xml
<?xml version="1.0"?>
<layout version="0.1.3">
<adminhtml_system_config_edit>
<reference name="head">
<action method="addCss">
<name>instagramapi/css/hBratingsliderAdmin.min.css</name>
</action>
<action method="addJs">
<script>instagramapi/js/jscolor/jscolor.js</script>
</action>
</reference>
</adminhtml_system_config_edit>
<default>
<reference name="head">
.............
file is located at
magento1/skin/adminhtml/default/default/instagramapi/js/jscolor/jscolor.js
and
/magento1/skin/adminhtml/default/default/instagramapi/css/hBratingsliderAdmin.min.css
is there any error in this code as no css or js file is included in admin panel