Photoshop Two Tone Color Swap

I have three lifestyle shots that currently show the item in a brown & tan 2-tone finish. I need each of those files recolored so the product appears in a navy & grey 2-tone instead, while everything else stays true to the original capture. Please leave the background intact and preserve all natural shadows and reflections; the final images must look completely authentic, as if they were photographed that way. When you’re done, deliver the three retouched files at 300 dpi in .png or .tiff format that can be placed in the image area on the dieline—no quality loss allowed. Acceptance will be based on: • Accurate, even color replacement matching navy & grey 2-tone • Zero visible artefacts or edge halos • Background, shadows, and reflections untouched • Final resolution confirmed at 300 dpi for all three images in .png or .tiff format ready for dieline placement. If you work in Adobe Photoshop and have a sharp eye for realistic composites, this should be a straightforward task. Let me know if you need the originals in a specific format.