I had an Undercover Flex, and loved it. It was pretty easy to install and remove. No leaks but I had to drill some holes for the drain tubes. For my new truck, I'm planning to get this type of tonneau cover from 4wheelonline.
I think it will add a bit of contrast. I've seen a lot of white cars with bronze rims, and they look nice. For your truck, try to check out Fuel, Black rhino and Ultra wheels.