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Extrude & Bevel (Classic), Revolve (Classic) and Rotate (Classic) take a preserveSpotColors param and a Preserve Spot Colors checkbox on the Lighting tab. When it is on, a fill or stroke linked to a spot or global swatch stays linked on every face: the highlight lowers the swatch's tint, and a face that darkens gets black over it, multiplied and overprinting, so a spot color keeps its own plate in separations and PDF. The checkbox is unavailable while Shading Color is Custom, and the param does nothing then. With the option off, the faces draw as before. A value that is not true or false is refused.