In the description of the plus version of booktype pro, it says the environment is only customizable by color and logo. Are there some examples to look at or a screenshot of the dashboard ... my problem is it is hard to imagine how customizable the environment actually is - on the one hand, it seems quite restricted, on the other hand, there are websites like http://printit.booktype.pro/ (with the domain .booktype.pro which indicates a pro plus version) that seem very individual.
That "by color and logo" customization is really just changing the CSS files. That for sure limits your freedom what you can do. Example which you mention also included changing the template files and installing some additional extensions. This you can not do yourself (at the moment) over the Dashboard interface.