Never had good opinion for WHMCS Themes not because there are no good themes but because the most of them are just HTML templates and the actual WHMCS theme was just a matching header and footer. Digit changes my mind. Is a 100% WHMCS template, with nice dark color combination. 99% you'll not need support as everything is explaining well in the documentation, but it you need it, is fast and high level. I highly recommend it.