This is a simple little app for the Samsung Galaxy line of phones. It will not work for the Galaxy Tablet, as this is very hardware specific. E-mail me if it doesn't work for your Galaxy S phone, I'd like to make it work for everyone. REQUIRES root access.
It keeps the LEDs for the capsense buttons on while the screen is on. In order to do this it requires root access.
To use, simply install and then add the widget to a desktop. Click on the widget to enable and you're done. Click on the widget again to disable. Once enabled, you can simply remove the widget and the system will remember your settings.
By default the service is disabled when you install, as it is not possible to start a service on install.
If you really like it there's a pro version where you can donate some money to my beer fund. The pro version will likely have (in the future) extra features.