Hmmm...

I undertand about the files from Polantis

I think that I am doing something wrong inside Blender; I took the fireplace from SweetHome3D's website just now, imported it into Blender, changed the brown to green, and exported it as a new OBJ file. When I tried to import the new fireplace into SweetHome3D the section of the fireplace that I changed had no color(white) It did not revert to the brown and other colors like the yellow from the grate was still there. What is this newbie overlooking?