CSS Library: Horizontal CSS Menus: Here
DD Color Tabs
Author: Dynamic Drive
This is a lightweight, very easy to customize image tabs menu similar to the one you see throughout Dynamic Drive. Instead of swapping between two tab images, this menu uses a unified transparent tab instead. What this means is that you can in fact change the menu and menu hover colors just by changing the two color values inside the CSS code! It doesn't get simpler than that.
The two colors used in this menu are: #8b0000 and #d50509. Just by changing these two colors, you instantly create a different theme for the menu tabs. There's no need to touch the images in any way unless your page's background image isn't white. In that case you'll have to modify the images' corners' background color so they match that of the page's.
The two images (resized for easier download):