Trillian 3 Originally developed in mid-June 2007, this theme is designed to follow in the footsteps of In The Dark for Firefox 2, its predecessor. The interface is set up simplistically, with a mostly black scheme, outlined and touched up with shades of gray.
Trillian 4 Developed in early 2009 for the new version of Trillian, In The Dark for Trillian 4 adapts to the new features of Astra.
Trillian 5 For the latest version of Trillian, In The Dark 5 has been released, a minor update on v4 to accomodate the new release.