Question about 3D printed material from Shapeways

I’ve recently ordered some objects from Shapeways. I chose blue and green for colors. I added little feet to the shapes which were not necessary in hindsight, so I clipped them off. To my surprise the internal material was white instead of green or blue. Could it be that Shapeways prints in white and somehow coats the objects after printing in the desired color?http://ift.tt/29pKtag http://ift.tt/29rmKlt