TextureSphere was created in Photoshop and, believe it or not, it all started with a photo on which I had done some coloring effects:


Then I applied the KPT: Reaction filter:


I added white at the top and bottom, added several color adjusment layers, and faded out two of the corners:


I then applied the Flaming Pear: Flexify filter and added a color gradient layer style to get the final product. Click the image to see it at full size: