Also - the shape in the x-ray doesn't seem to match the image of the 'golden gun' - look at trigger area and length of the grip. I would think anything plated in gold (even electroplated) should reflect like a mirror, although I guess the lower half of the grip is probably plastic.
And all that other blue-black stuff in the x-ray image seems to have the same characteristics as the gun. I know it’s a multispectral image, but I’m so surprised that a gun would have the same characteristics as all the other junk she’s got in there. If you put the gun amongst all that other stuff, it’ll be a lot harder to see. But then again I guess there will be other spectral images they would’ve had and wouldn’t be releasing the juicy ones.