This is a standard set including only the above buttons. If you would like to mix and match your own set, check out my Mix & Match listings here: http://www.etsy.com/shop/primpmyblog?section_id=11857514
You may choose any one of the twelve listed colors. Buttons have a transparent background, are 40 x 40 px, and will be delivered in PNG format. I will also provide you with the information needed to properly install and link them yourself.
If you would like to purchase buttons in another shape, color, or pattern, or if you need a button for a social network not listed here, please convo me about a custom listing - I would love to work with you to create buttons for your needs!