When you create a newsletter you can choose the style and layout of the newsletter. You can go back at any time and edit a newsletter to change the style too.
To do this:
1. Inside the newsletter wizard, click on "show advanced fields" at the bottom of the page.
2. Click on "manage templates" to see your available templates. You will have some that are provided by Digimind and it is possible that your company has asked for a corporate branded one in your company's colors and with your logo.
3. You can then choose the one you would like from the list.