Sorry for the slow reply
I bought the car used, and wasn't aware that paint work had been done on that spot before. I was aware that paint work had been done on on the passenger door, and pointed it out to them when I dropped it off.
So sadly taking it back to the paint shop that the body work was done isn't an option.
I wasn't thinking and didn't take any pictures with the dull spot.
The closest example i could find online was similar to this:
Obviously it was just in that small area and not the entire roof like the example.