ISO - PRADA Nylon Shoulder Strap with silver hardware

Hi! I just purchased the large PRADA Supernova in Cognac (first pic) and would like to find a nylon PRADA shoulder strap with silver hardware to use in place of the thin one it comes with. Looking for one like the second pic. Please let me know if you have one! One with black and cognac would be great. PRADA only sells them with the small bags. 😫