I hope everyone catches that part of the post. It's very important, I think, based on the previous HN thread comments.
I've been quite surprised at how many people are in an uproar about v3 being flat. People have been saying things like "it's a dumb trend", "horrible UX", "so ugly", etc. For a skeleton starter template like this, flat is good. Having the design flat encourages you to build on it or theme it to your OWN style so all of the sites using Bootstrap don't end up looking the same (like they have in past versions). It was also annoying in past versions when you had to declare no gradients, or reverse engineer things to lose the "default theme". Making it flat now allows you to build up, where past versions made you go backwards first, then build the theme the way you wanted. I hope more people realize that rational now they have specifically called it out.
With that said, well done everyone that helped on the project! Great work! :)