Halls, or even hall dining rooms, tend to be places where you pass through all too quickly, and so are good candidates for strong color or exciting decorations. Research by a paint company has shown that many people choose to decorate their hallway in shades of green a subconscious desire to bring the outdoors in, perhaps, if this is your natural remember that greens can be either warm shades, if there is a higher proportion of yellow in the mix, or cooler, if the blue element of green predominates.
When you are choosing your shade, experiment with tester pots first. The expanse of wall in a hall is usually so large by far the greatest surface area in this space and awkward to decorate, that it would be disastrous to find you have the wrong color when you have finished. Look at the color in natural and electric lighting, too. Depending on the sort of bulb that you use to light the hallway, the color will be greatly affected. A yellow tungsten bulb or the white of halogen lighting, for example, will dramatically change the overall affect in the evening.
Of course, if your hallway doubles as another room, you may find green a little too difficult to live with for long periods of time. Dining with such a color in the background is not particularly comfortable so bear this in mind when looking at color schemes; warm shades of terracotta are especially lovely in the evenings. Put your lights onto dimmer switches, too.