server-ux/base_tier_validation/views/tier_review_view.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright 2017 Eficent Business and IT Consulting Services S.L.
     License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl). -->
<odoo>

    <record id="tier_review_view_tree" model="ir.ui.view">
        <field name="name">tier.review.tree</field>
        <field name="model">tier.review</field>
        <field name="arch" type="xml">
            <tree string="Tier Review"
                  decoration-danger="status=='rejected'"
                  decoration-success="status=='approved'">
                <field name="sequence"/>
                <field name="review_type"/>
                <field name="reviewer_id"/>
                <field name="reviewer_group_id"/>
                <field name="status"/>
            </tree>
        </field>
    </record>

</odoo>