change only the wood material finish in this library render to match the uploaded reference exactly keep the entire design layout proportions built in shelving desk shape cabinet positions lighting layout accessories placement windows curtains terrazzo floor and camera composition unchanged do not redesign anything the new wood texture must match the reference image a dark warm walnut toned wood with rich natural grain deep brown tone with subtle warm reddish undertones soft tonal variation premium seamless veneer look and a matte satin finish the grain should feel elegant and architectural not rustic not orange not grey and not too black keep it refined luxurious and realistic with smooth continuous grain flow across all vertical and horizontal panels apply this same wood finish consistently to the full height bookshelves lower cabinets desk surface and drawer units side panels visible wood frames and all wood cladding elements important make the wood texture seamless and properly scaled avoid repeated pattern tiling avoid exaggerated contrast in the grain avoid artificial glossy finish avoid flat muddy or overly dark wood keep the veneer direction logical and consistent on each element preserve the integrated shelf led lighting and let it interact naturally with the darker walnut finish rendering quality must be ultra realistic with physically accurate wood reflections realistic depth in the grain clean joinery premium cabinetry finish and soft natural daylight the final result should feel like a high end interior visualization with the same wood mood and finish as the reference render
