web/web_tree_dynamic_colored_field/views/web_tree_dynamic_colored_field.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- vim:fdn=3:
-->
<odoo>
    <template id="assets_backend" name="web_tree_dynamic_colored_field assets" inherit_id="web.assets_backend">
        <xpath expr="." position="inside">
            <script type="text/javascript" src="/web_tree_dynamic_colored_field/static/src/js/web_tree_dynamic_colored_field.js"></script>
        </xpath>
    </template>
</odoo>