As Ian has said, you'll definitely need to back the, pearl silver will give a good solid finish with a fair pop, AutoAir aluminium backers can be used to give a much more course, almost metal-flake effect and can look amazing in sunlight, or failing that go with a pearl or metalic version of the translucent colour. I love trans blue paint with pearl blue behind it, it gives such a deep, vibrant finish that looks amazing in sunlight... it's not as good as a true candy finish but it's a lot easier to spray!
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