In regards to this thread, having taken a very quick shot in PS, I feel like had the image been exposed better and you'd adjusted for darkness with midtones, you could retain the dark feeling but give it a bit more something. As it is, you've lost a fair bit of detail in your shadows and the whole image feels rather flat.
Regarding composition, which you didn't ask for opinions on but which I'll give anyway since I'm here...I think the two main subjects, the lighthouse and the group of two people, compete against each other for focal point. I have no idea what the scene outside your shot looked like but pretending it looks like I want it do (when does it?), more empty space on the right might help offset this. Love the idea of the shot, though.
(Of course, you're the one with 3 red ribbons while I have...umm...hey, it's snowing!)
This is a very cool photograph. I love the darkness, puncuated by the red light on the top of the tower. Just light enough to see the detail. Well done!