I would visit your local paint supply vendor and look at the paint chips that he has. You can pick a lighter shade of what you are looking for and he can mix it perfect for your needs.
Mixing black in paint goes a long way. It will be very easy to get it too dark too fast.
If you have the vendor mix the paint, it will be easier to get more if you need to make a repair later. If you mix it you will never get the same color later for any repairs.
Frank Cox
Cox Custom Cars
