MAC A Glimmer of Gold #4 is a warm taupe with a pearl finish that is permanent in palette and retails for $21.00. In comparison, Wet 'n' Wild Naked Truth #4 is a warm taupe with a pearl finish that is discontinued and retails for $2.29.
Wet 'n' Wild Naked Truth #4 is 95% similar — it is less shimmery, lighter.