I look to the picture in the link, yes it is a colored 3D print, i have also uploaded a colored mesh to Shapeways and it must a VRML2 format, to do this i use C4D to add the texture to the mesh and exported the file in VRML2.
VRML2 file create a link to the texture, the process is explain here
www.shapeways.com/tutorials/ex…I have removed my colored mesh from Shapeways, but i will upload a new one soon to show you the result
Fiji image create only OBJ file wich not include textures image