I am familiar with the concept. However, I would recommend hesitating to anyone who thinks any software from the organization, open source or no, is entirely harmless to the user...
I'm still trying to figure out, in this day and age, especially after the Snowden disclosures, why anyone would trust software released by this organization.
you do realize their primary goal is intelligence gathering?
Having spent many years in US Navy Radar Rooms, NOC's and the like. I can tell you that white interfaces are the digital equivalent of being snow blind. it's MUCH easier on your eyes and your vision if you utilize dark backgrounds (or darkmodes) than it is to use bright interfaces... that's not just my opinion but something born from experience...