Don't get too hung up on getting a perfect colour match,I'd say your car looks stunning and probably dosent need any painting but if you do need to in the future as I said don't be afraid to call down to a small paint supplies in your area,call in the afternoon as deliveries are usually in the morning and they won't be so helpful.explain what you want and they'll probably mix a tenth of a litre up for you to compare,keep some thinners handy while your there and just dab it onto the bonnet,it'll thin straight off.then you can ask them to tint it anyway you like to exactly match up,as long as they make a note of how much tinter is used then you've got your formula and can get a load mixed up.btw that 3dr shell looks stunning but I can see from 300 miles away the colour is miles out,again best to go on a sunny day as light really affects it,petrol station forecourts will show up poor paintwork but that's mainly down to poor prepwork and may often dissapear with a good cut and polish.