code: function logGroupStats(groupName, groupOrder, groupDest, files) {
  			if (!groupDest) {
  				return false;
  			}
  
  			if (!grunt.option('no-color')) {
  				groupDest = groupDest.cyan;
  			}
  
  			grunt.verbose.subhead('%s: -> %s', groupName, groupDest);
  
  			groupOrder.forEach(function(component) {
  				if (_.isArray(files[component]) && files[component].length) {
  					files[component].forEach(function(file) {
  						if (!grunt.option('no-color')) {
  							file.component = file.component.yellow;
  							file.size = file.size.green;
  						}
  
  						grunt.verbose.writeln('  ./%s [%s] - %s', file.src, file.component, file.size);
  					});
  				}
  			});
  		}
docs: Verbose print list of files for a group.
  
  @param {String} groupName Name of a files group.
  @param {Array} groupOrder Order of components.
  @param {String} groupDest Path to result of concatenation.
  @param {Object} files Map of components fileStats