Getting a good colour match for paint job

[Johnny2R]

I've just had some paint work done on the sills of my Wedgwood Blue Tourer, which I'm not happy with for two reasons. Firstly, it has an orange peel texture, which is disappointing, and which I hope to get the garage to address. But it's also slightly darker than the rest of the car. I'm wondering whether the colour is actually right on paper, but the paint on the rest of the car has faded slightly over the last 16 years. Does this happen? And if so, how should they deal with this?