You said that the lighting provided is from a normal 100W bulb, right. Your run of the mill light bulb is an incandescent bulb. It has a tungsten filament. Due to the inherent properties of tungsten, it gives off a "warmer" color temperature of light than midday sunlight does. In short, it makes everything appear more yellow. Your eyes will normally compensate for different lighting conditions, but the camera doesn't know how to. There are three things you can do to take a more "natural" picture. The first two are easy. The third requires a decent digital camera and some knowledge of how to change settings on it.
1) Take your pictures outside, or
2) Take your pictures indoors under a "daylight" type of light for more accurate color representation, or
3) If your camera allows you to change the "white balance" setting, do it. By default, the white balance is set to auto, which usually doesn't work very well. Trust me. Change it to tungsten, then take your picture under the same lighting conditions as before. I'd love to see how the picture comes out.
By the way, take a look at the other white balance settings. Use fluorescent under fluorescent lighting (you know, the long tube lights). Use sunlight, cloudy, etc. under those type of outdoor conditions.
Hope this helps,
Tyler