eiru_crm/views/assets_view.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
        <template id="web_task_color_assets_backend"
                  name="web_task_color_assets_backend"
                  inherit_id="web.assets_backend">
            <xpath expr="." position="inside">
                <script src="/eiru_crm/static/src/js/web_task_color.js"
                        type="text/javascript"></script>
            </xpath>
        </template>
    </data>
</openerp>