How can colors of EasyBlog can be configured

Hi there,
I'm highly interested in subscribing to EasyBlog but need to know few things before:

Some of out sites are kept with dark background.What i need to know is, if EasyBlog colors (themes) can be configured to match such sites. How is the configuration done? By selecting a certain theme or is it possibleto fine tune all the colors using the configuration or can it only be done by changing colors codes within the code?

Thank you very much for your information
Best regards,
Michael