This is awesome but I wish it was decoupled from their own design aesthetic.
A black and white or muted them would be outstanding.
I wish it was something like this: http://empties.bourbon.io if its critical to include their own components, but I still would rather be able to just take the grid system and a few others so I can structure the file/folder structure in a way that works for me.
What's browser support for this like? I know there are some IE issues with Flexbox...