Some 5.0 themes work for multiple devices...I downloaded a theme (don't have it anymore and can't remember the name) and it had 2 links....one for the touch devices and one for 8900/9700 etc..
yeah if you have OS 5.0 installed then those themes shouldddd work. My themes are made for the 8900 but many tour and bold 2 users have been using them. As of now there are many more themes available for the 8900 though...