We just released a new set of buttons named "Rombo". The buttons are in SVG format, so the user can select the size directly inside the Pano2vr skin editor. The shape of the buttons allow very original ways to arrange them in your skin's controllers. We provide the full set with icons in white and green (the user can edit and change the colors using a text editor or an SVG graphics editor).
To buy the set or to see other sets, you can visit our skins site http://skins.360panotours.com
Here a sample of the new set...