By now it is only available for Gnome v.3.8.x. Files for older versions of gnome can be found at github (see development).
How to install
Extract the zip-file and copy the folder "LittleBigMod_2nd" into ~/.themes/. Also install the fonts from the fonts folder. Now enable the theme with gnome-tweak-tool. Having installed a prior version of this theme, you might also (ALT F2) + r. If you also want the gdm-screen, you'll have to install the theme for all users.
3 years ago
1.7 - release for gnome 3.8.x with lots of bug fixes and design updates.
1.6 - release for gnome 3.6.x with lots of new features and reworked design parts
1.5 - working summary-boxpointer arrow, modified calendar, new checkbox graphics, code cleanup
1.4 - modified hotplug-notifications (player, devices, chat, etc.), bug-fixing
1.3 - modified popup-menus & sliders, new media player indicator design, bug-fixing
1.2 - new application switcher, modified tab bar, further DashtoDock support
1.1 - new workspace switcher, fixed notifications (especially empathy), new round corners for notification, summary & workspaces, experimental support for upcoming DashtoDock releases (may have changes in future), rtl-support
1.0 - New modal dialogs, new password dialog, new run dialog, modified popup-notifications, bug-fixing
0.9 - New mount dialogs, modified popup-notifications, sharper typeface in some cases, further bug-fixing
0.8 - New calendar, new media buttons, new popup notifications, modified keyboard, bug-fixing, general cleanup
0.7 - new sliders, new status menus, new user menu, new media buttons, rtl-support
0.6 - solved an old problem with bottom round corners, new app-buttons, new search-buttons, new keyboard, new contacts, some animation modifications, further rtl-support and bug-fixing
0.5 - optimizations for icon-tray, second overview layer, updated rtl-support, bug-fixing
0.4 - solved graphical issues in search results view, support for BashtoDash extension, update for rtl-support (dialogs, etc.), further bug-fixing
0.3a - kill buggy version
0.3 - fixed issues on workspace indicator when changing resolution, bug-fixing, experimental rtl support
0.2 - new dash, new app overview
0.1 - first release