Product review (4 stars): Watch the wiggle...
I have a GE model GLD4400N00WW, and was fine with the dark gray color instead of the white.  One user mentioned that if the part was not installed right, there would be wiggle and cause leaks.  The rear mount bar was nowhere near thick enough to keep a tight fit, and would have most certainly caused a leak or short.  I shimmed around the mounting bar with wood campfire skewers (which is a terrible idea since the light glaze probably won't keep the porous wood from eventually soaking up moisture, but it was all I had at the moment).  If you also run into this, you can probably use a long 1/8"-1/4" shim, just start the screws on the top and bottom with your fingers and get the shims in before you really tighten down.  Good product, just wasn't the 'exact match' that was indicated.