Allegro2 is a new version of "Allegro" that has been written from scratch, with beauty in mind. I believe that IPB 4 deserves some beautiful themes and that Allegro2 is one of them.
With high quality royalty free images for both personal and commercial use you will never have to worry about copyright when using Allegro2. Your website matters. This theme has not been tested with image as logo! Allegro2 emphasizes on a theme that is both beautiful on the eye, and easy to customize.