I really love my BlackBerry 7 device, but the lack of themes was one of the biggest negative aspects of my Bold 9900.
Through unofficial methods (& possibly hacking certain aspects of Theme Builder 6), Magmic has released not one, not two, but FOUR BlackBerry Bold 9900/9930 themes! This comes merely days after they released Deck The Halls Holiday Theme. There is obviously many rough elements within the themes, & the overalll customization might be minimal, but this is quite certainly a great start to possibly higher quality themes in the near future.
**These Themes are also compatible with several OS 4/5/6 devices**