The night vision / cinema effect that is in git (FG 2.9) is now available for 2.8 users. Once installed, it modifies the Rembrandt configuration dialog like this :
There is no return path except reinstalling fg. Windows users just have to execute the provided setup. Linux and Mac user must unzip the zip file over the base package. Beware to unzip at the right place in order to overwrite existing files.
Windows : http://frbouvi.free.fr/flightsim/fgsetu ... -2.8.0.exe
Linux + Mac : http://frbouvi.free.fr/flightsim/Rembra ... ffects.zip