Epona Megamenu can be 1-4 columns, full width, including widgetized images.
This date range picker component for Bootstrap creates a dropdown menu from which a user can select a range of dates. https://github.com/dangrossman/bootstrap-daterangepicker
Use on your custom.js: jQuery('.datepicker').daterangepicker({ singleDatePicker: true }, function(start, end, label) {});
Use on your custom.js: jQuery('.rangepicker').daterangepicker(null, function(start, end, label) {});
It basically adds a color picker to a field or any other element. http://mjolnic.github.io/bootstrap-colorpicker/