Gypsymob,
If you would like to create new channel buttons with the gloss white or gloss black look, GuiFX has a free program called LogoTools, which I directed another member to about a month or so ago.
www.guifx.comLogoTools will automatically create 3D channel icons from the flat white background syle so you can keep adding channel icons to your collection with the same exact look. It was way too hard to try to keep on top of all the new channels and keep adding them to the the collection so they devised a way to make it easy for anyone to do.
The gloss black versions were originally done by myself and became very popular as they looked very "Mac Aqua" with the high contrast, extreme gloss. When GuiFX decided to create LogoTools, I supplied them with the overlay for the black versions so anyone who already had my collection could easily add on. They supplied the overlay for the white gloss, which I also like for certain applications.