Just drop the admin folder into your custom WP theme and include the init.php file from your function.php, and you have access to a full range of admin option fields and metaboxes.

Theme Options Example Set Up - fields.php

###text Supports: id, name, class, placeholder,label,desc, css

###number Supports: id, name, class, placeholder,label, desc, css

###email Supports: id, name, class, placeholder,label, desc, css

###select Supports: id, name, class,label,desc, options (key => value array)

###date (jQuery Ui Datepicker) Supports: id, name, class, placeholder,label,desc, options (jQuery UI Datepicker Options - http://api.jqueryui.com/datepicker/#option-dateFormat)

###textarea Supports: id, name, class, placeholder,label, desc

###wysiwyg (WP Visual Editor) Supports: id, name, class, placeholder,label, desc

###color (Spectrum Color Picker) Supports: id, name, class, placeholder,label,desc, css

###upload, upload_repeater (WP Uploader) Supports: id, name, class, placeholder,label,desc

###upload_bg (WP Uploader) Supports: id, name, class, placeholder,label, desc, css

not available in metaboxes yet

###html Supports: desc (as html / CSS / JS Code)

###font Supports: id, name, class,label,desc, options (key => value array), css