I personally like the style of GitHub more than virtually any other site.
I'm looking at this from the perspective of someone who works at a startup with a fair number of people whom are non-technical (primary developer who gets stuck with IT stuff as a result type situation). I've pushed security best practices on them in various forms to various levels of push back. I'd love a simpler way to get them to use VPNs for various functions, something simpler than sending them single use download links of openVPN installs with their security certificate embedded. This seems like it would help with this, but I can see that would get pushback on the site theme. e.g. "Is this really what I need to sign up for?" e-mails with a screenshot attached.
I'm not trying to be too critical and I hope you don't take it that way. Just trying to provide some feedback based what issue I may have with implementing your service.
Curiosity has bit me, so a question:
Have you done any testing regarding the 'cryto/security' space and the dark color theming? I know that dark themes are all the rage but I've always noticed that many people think of 'cryto/security' stuff as a dark, evil topic used by hackers and the like. I'd be curious to know if a more upbeat, lighter theme would have an impact on conversion. "Bringing security into the light" or whatever.