Here's how I would do it.
Go to this page, which is the Bucs' logo:
http://www.sportslogos.net/dev2/logo...oe3sozrngksynb
Copy the logo to your hard drive.
In TB, upload the logo - use the "logo colors" option to get the official colors from the logo. You don't have to use the logo after this, just don't select the "logo colors" option if you change logos.