Nulled theme pros and cons

no point in using nulledbb themes, aoki is going to change the base code to this theme and that will screw up mostly all other themes,

"leaked/ripped themes are called mirror themes they pull the css of nulledbb theme and impute it inside a .xml file which resembles the theme, once some codes are changed here that theme is broken."

the best bet is to use official mybb themes or hire someone to build you one.