The style repository that can be found at brewerwall.com/api/v1/styles. Feel free to fork and use however. If you see a mistake or would like to add any missing styles, submit a pull request with the modifications/additions.
If you would like to update styles, update styles_master.json. Once the file has been updated run:
./generateThis command will generate a CSV and MYSQL file, along with copying over the master JSON file to another json file. This is merely a bash script that calls a php file, so you must have php available.