While a lot depends on the theme you choose, and we can certainly recommend some of the best themes out there, having your message match your theme and vice versa goes a long way to promoting the image you want.
This site is all about living Green so a custom header image was created and the overall appearance shaped to support that vision.
Theme: Elegant Themes : Cold Stone
Customizations: Custom image for header, edits to theme to allow editing posts and pages without the need to go to the dashboard first, sizing of the thumbnails, edits to the CSS to change fonts and colors.
Visit the live site Eco Friendly Green Earth