Brown? Actually the exterior color is Light Gold. It's a nice bright and clean looking gold in person. It doesn't always show correctly through a camera. This color was used in some of the Camaro brochures. Some other gm golds have more of a bronze look to them.
As for the stripes, there was only one kit. They were all the same color: black, red and blue on a white background. I read somewhere on-line that the white background was a mistake and it was supposed to be clear. I don't think that is true. It wouldn't show well on a dark car. I'm not saying I wouldn't like it, but I doubt GM wanted to hide the stripes on a dark colored car. Here is a close-up of a rear stripe from a car that was just on e-bay:
