The template you chose gives you a set of default look and feel options, but you can change about everything if you want to.
Clicking on ‘Themes’ under ‘Appearances’ will give you a set of pre-set look and feel options. Clicking on ‘Theme Options’ will allow you to edit your current theme including type and color used on your site.
If you click on ‘Header’ you can change the picture that is in the header of your website. They have some stock options or you can upload your own photo.
There is a way to have someone design a wordpress template for you and then upload that template to the site. I don’t think doing that is super simple, but it can be done.