This set is a variety pack of free vector glass buttons and bars for your webpage or blog. Since they are in vector format, they can be easily manipulated and scaled to fit your layout without having to worry about pixelation. To customize, you will need a graphics editor, such as Adobe Illustrator.
Customizing tip: use the direct select tool (white arrow) and select one of the gray background shapes. Then, in the “Select” menu, choose “Select > Same Fill Color.” This will allow you to change the fill color of all 72 bars at the same time.