There is something unusual about this picture. Normally in TouchFlo3D the background image is only visible on the home page. Using a cab file found in this xda-developers post one can finally enable this feature which HTC inexplicably excluded.
In the same thread a number of other useful hacks can be found, such as adding Forward to the messaging menu or reducing the font size in the TouchFlo3D menus.
Read this XDA-Developer thread for more information.