You can only configure the colors, what is in addition limited to the primary and secondary color of bootstrap framework. The implementation is done by inline styles, what is not best practise. There is also no login-link in head-section and login-page does not fit in the style. The Theme comes with a site-template, containing structures ans templates. Some of them contain "hard-coded" html-content.
There are some other "hacks" to achieve the visual result (e.g. no rendering of titles in webcontent-portlet. The effect is that you can not access the edit webcontent menu any more).
The support of the developer is also not good. It seems that he understands most question as a complaint.
All in all this solution does not delivery enogh value for the money.