Use case: precise-object-edit. Correct ONE issue in the supplied transparent pixel-art portrait of Topper. His skin must be LIGHT NEUTRAL GREY, not the blue/lavender of the current image. Replace the blue/lavender hue throughout face, ear and neck with low-saturation stone-grey with a slight warm undertone. Preserve current value modelling, same long face, features, angle, subtle courteous smile, white hair, dark angled eyes, green clothes, pixels, proportions, position and true transparent background exactly. Do not recolour hair, clothing or eyes. No new details. He is a part-human Tiste Andii man; he must not read as a blue-skinned Napan like Surly. Preserve exact canvas and silhouette. This is a restrained colour correction, not a redraw.