The code of ansi-red for those interested:

    var wrap = require('ansi-wrap');
    
    module.exports = function red(message) {
      return wrap(31, 39, message);
    };

And ansi-wrap:

    module.exports = function(a, b, msg) {
      return '\u001b['+ a + 'm' + msg + '\u001b[' + b + 'm';
    };

Now imagine those things inside a real utility that gets adopted by some popular package.