This is a Free Vector Package I put together with some Glass Style Bars with diagonal banding. It is totally customizable with a vector graphics editor, such as Adobe Illustrator. Included in the download is the AI, EPS, SVG, and PNG file. Customization requires intermediate-to-advanced Illustrator knowledge. The images below represent a mere 10 examples of the endless amount of possible color combinations.
The fade of the banding was intentional for one reason: If you have an expandable layout website, you can chop up and repeat the right portion of this image to make a flexible-width bar.