From that picture, the wheel on the left looks slightly lighter.
From previous colour matching experience, the base can make a difference even if the code is correct. I think it was a oil or water base that could affect overall.
You may well get the whole, 'it's impossible to 100% match' , or 'the sun has altered the original colour' excuse, to avoid the company who did the refurb from having to redo it. Then again if they car about customer service, they may happily redo it FOC.
If you notice a difference now, I suspect you will not be happy until you get it resprayed - or dare I say it, the other 3 wheels also resprayed at the same time.
Good luck in trying to get it sorted to your satisfaction