海报逐步微调

Upload the current version of your poster and describe exactly one change to make in this generation. Use that current image as the editing reference; an earlier original, if also supplied, is context only and must not overwrite changes already accepted. Apply only the requested adjustment, such as replacing a date, changing the palette, resizing one heading, or removing a small illustration. Preserve all unrelated wording, spelling, element positions, canvas proportions, and the main composition. When removing an element, reconstruct its immediate surroundings consistently without redesigning the poster. If changing text, use the exact replacement supplied and do not repeat it elsewhere. Return one edited poster. For a further adjustment, manually save this image and upload it as the current reference in a new generation with one new instruction. User request: Using my uploaded coffee festival poster as the current reference, change only the palette to black, silver-gray, and orange while preserving the text, layout, and coffee illustration.