Old Gold is a dirty brown-gold with a green flash. It’s softer, browner, and less metallic when applied dry. I couldn’t think of a dupe that has the same green tinge, but there are a few that resemble the gold hue. Maybelline Bold Gold is browner, less warm. NARS Paramaribo is similar but darker. Make Up For Ever #11 is greener, less brown. OCC Cruising is darker and browner. Le Metier de Beaute Chameleon is more muted, browner.