I bought a Dodge Aries many years ago. There was a small spot on the trunk that the dealer agreed to paint. The dropped a big dollop of mismatched paint on it. I complained and they repainted the whole trunk with a mismatched, dull coated, orange-pealed paint that looked like primer. A year later the paint pealed off the whole car and it all matched perfectly.
A good shop will have a tool that can analyze the paint and match it perfectly. Good help and someone with the know how to use the tools are hard to find.