I put my last digital painting (thumbnail 1) into Photoshop and duplicated it so I had 4 of the same image. By changing some of the reds, blues and greens in the 'Levels' option and changing 'Hue/Saturation', I came out with some really interesting colour combinations.
I think thumbnail 2 is a lot stronger than the original image (1) as I feel the colours are more intense and fitting for the story whereas I feel the original was a bit too light. Number 3 has a really Halloween-like feel and real spookiness - Hannah also mentioned that it reminded her of The Cabinet Of Dr.Caligari film in which I agreed on. For the fourth one, I went for a more blue looking scene although nothing too outrageous. I think that it actually works quite well, giving off a very cold, dark atmosphere with the hints of dark red on the walls and in the shadows.
Overall pleased with this quick exercise - feedback welcome! :)