I've been experimenting with rounded tabs for the navtabs. Considering that the upper "tab" is a separate entity than the lower "body" of the navbar, I gave up on using gradients for both areas. I found it too hard to match colors since it was going light/dark/light for the tab and repeating the same light/dark/light for the navbar. This put the two light areas together and it looked strange.
Take this forum as an example, the tab is a solid light blue and the navbar has a gradient. There is no smooth transition between them. I'm wondering how to apply a single gradient to the tab plus navbar. This means the gradient would start above "forum index" and end below "watched threads".