First things first, do npm install chalk

Basic usage

  var chalk = require('chalk');
  console.log(  chalk.underline('Hello') + ' World !')  );

Chaining

  console.log(  chalk.red.bgWhite.bold('Hello world!')  );

See all styles in action

  Object.keys(chalk.styles).forEach(function(style) {
      if( style !== "reset") {
        process.stdout.write(chalk[style](style) + ' ');
      }
  });

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