I'm guessing the grey areas are critical to parts of the container. I guess I'll just do some fine tuning on the fuzziness setting on the replace color dialog. Weird, it just worked differently (correctly) for some odd reason. Edit again... It doesn't work very nicely for bright colors. I'mm a perfectionist though, so I'm sure no one will notice a 1 pixel edge that is slightly different in color when it's not supposed to be.
On another note, can we have a list of container skins that have been done?