The stock muffler on the US Engines 35 cc and 41 cc engines is a two-piece, black unit. It has two exhaust stacks that point away from the crankcase, or downwards when the cylinder is oriented downwards.

The picture on the US Engines web site is not of a silver-colored muffler. The lighting of the shot only makes it appear that way.

From your descriptions, you received the correct muffler with your engine.