Now picture a beautiful B&W. Take away all of the contours and you're left with a shapeless blob of black and white. Please justify?
Are you suggesting that a blind person cannot envisage colour? Again, please justify!
why not do as Manfred suggests and show both a colour and a B&W image and then accept the consensus?
Regarding your original image, Manfred is correct in saying you have not used the full tonal range.
Additionally, I'm not sure that the outline of the plate adds anything to the image....