I modified the zenpage theme for my own needs.
What I want to do now is to change the image.php.
After clicking on gallery, you can choose between the albums. After choosing a album, you get a overview of all the images. Now, if I click on a thubnail-image, I want to open that in colorbox. Right now, you click on the thumbnail, where you get to another page with the photo - on clicking on the photo, it opens in colorbox.
Maybe someone can help me with the code.