code: function log(key, value, message, errorLevel = 1) {
    const error = {};
    // looks for the original item that caused the error
    error.entries = colorsSrc.entires.filter((entry) => {
      return entry[key] === value;
    });
  
    error.message = message;
    error.errorLevel = errorLevel;
  
    errors.push(error);
  }
docs: logs errors and warning
  @param   {string} key        key to look for in input
  @param   {string} value      value to look for
  @param   {string} message    error message
  @param   {Number} errorLevel if any error is set to 1, the program will exit