Lab Tick - Introducing Control.
Have you ever been annoyed by your PowerBook?s (or MacBook Pro?s)
backlit keyboard? You can not control it, you simply have to deal with
the behaviour dictated by the ambient light sensor, which sometimes
does not work really well. The idea of a backlit keyboard is awesome,
but the implementation in Mac OS X has its flaws. Lab Tick aims to fix
them.

Version 0.9.2 is the last supported version for OS X Tiger.

License
This applet requires no serial and is free to use, but the developer
would appreciate a [donation][1].

It does not appear to have been updated since 2009. Several user
reviews on MacUpdate claim that it may break under a certain OS X
10.5.8 update.

Compatibility
Architecture: PPC x86 (Intel:Mac)

PowerBook or MacBook (regular/Pro/Air) with backlit keyboard
Mac OS X 10.4 or later

  [1]: http://labtick.proculo.de/