Hi guys,

Some websites have back and forward buttons displaying in various colors without being pinned / dragged onto the taskbar or desktop.
For instance, the following You Tube page displays buttons in silver (or transparent, without color) without being pinned...

http://www.youtube.com/watch?v=tVGFqW7H0-8

How do they do it? Checking the page source I can't figure it out.

Thanks,

Kenny