if i wanted to change the otter body of my cellphone can i and how much !!
Um, I think you may need to be a bit more specific with your request as I'm not sure exactly what you are asking.
To change the outside apperance of your phone though, you have many options.
You can go with skins, cases, etc.
Not sure on the new Thunderbolt, but on some of the older phones, there were companies that would actually paint them for you.
You may want to do a google search for covers, case, or skins for the thunderbolt and see if you find something that will work for you.