These boxes are specially designed for the websites which are indeed of web 2.0 styled pricing tables boxes or featuring any tables or comparision tables on the websites and need of some cool graphics like download now or register now buttons, banners and signup buttons etc.
Editing the gradients or colors are so simple just select the layer and check if i used any gradients and change it to your needs for your projects.
Fonts I have used are or Trebuchet MS, Arial, and Verdana and other details are in the readme file