Crisp is a wonderful little theme, originally created to work with Ghost. I don't use Ghost so I ported Kathy's theme to work with Postach.io. I hope she doesn't mind. It is her theme and she deserves all the credit. I tried to stay true to her original vision.
The original can be downloaded from GitHub but it's designed to work with Ghost, so be forewarned.
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International