code: function() {
    if (cache.styles) {
      return cache.styles;
    }
    
    cache.styles = {};
    cache.styles[CONSTS.LOG]     = chalk.white;
    cache.styles[CONSTS.INFO]    = chalk.cyan;
    cache.styles[CONSTS.SUCCESS] = chalk.bold.green;
    cache.styles[CONSTS.WARN]    = chalk.yellow;
    cache.styles[CONSTS.ERROR]   = chalk.bold.red;
    
    return cache.styles;
  }
docs: Gets the chalk styles from cache, creating cache object if it doesn't exist.
  @return {object}