I feel your pain - had the same situation when my car was recovered for a burst coolant pipe under the supercharger and they had to take the bonnet off.
It was re-fitted so badly that when you opened the passenger door it flicked the bonnet sideways and chipped the paint off.
...and all they really needed to do was to align it to the original washer marks!
Mine is also special order, Lunar Grey Metallic, and I was concerned that it would be almost impossible to match when painting the bonnet edge, but no, it came back amazingly well done.
The body shop had left a hanger on the mirror to check seat and mirror adjustments, so I know where I will go now when I want the speckles on the nose cone or sill re-finished.
As frustrating as it certainly is, I find it best to be firm, but fair in your stance, clearly stating what you expect, and give people a chance to sort it, rather than venting your frustration.
Hope it comes back flawless - good luck.