old_contents: const Color = require('color');
  
  module.exports.onWindow = browserWindow => browserWindow.setVibrancy('ultra-dark');
  
  module.exports.decorateConfig = config => {
    config.backgroundColor = Color(config.backgroundColor).alpha(0.85).rgb().string();
    return config;
  }
  
new_contents: const Color = require('color');
  
  module.exports.onWindow = browserWindow => browserWindow.setVibrancy('ultra-dark');
  
  module.exports.decorateConfig = config => {
    config.backgroundColor = Color(config.backgroundColor).alpha(0.85).rgb().string();
    config.fontFamily = '"Fira Code", Menlo, "DejaVu Sans Mono", "Lucida Console", monospace';
    config.termCSS = `
        x-screen x-row {
            font-variant-ligatures: initial;
        }
    `;
    return config;
  }
  
subject: Add Fira Code to the font stack and enable ligatures