This is a product photo of {{product}}. Produce the same photograph in a different colourway. Keep the camera angle, the product's position, scale, framing, lighting, shadow and background identical to the reference: same shape, proportions, stitching, seams, hardware, label layout, logo and printed text, unchanged where it is not being recoloured. Change only {{parts}}: make them {{colour}}, keeping the same material finish, the same shading, highlights, stitching and texture. Everything else, including the background, must stay exactly as it is. No new text, no new logos, no new parts.