I found another meditation blog today. It's called "Meditation is Easy.com". A recent post talks about candles:
Meditation candles are very useful accessories in your meditation activities. If you have a separate meditation room, using candles while meditating can be an excellent idea.
Candles can help give you that great feeling of a little warmth and light in the room while you are meditating. Some specialized candles are perfume based and they will fill the room with a pleasing aroma producing a sense of relaxation and calm... Gazing at the tip of the flame of the candle constantly is also one form of meditation, which helps in increasing concentration.
Even if you can’t have a separate meditation room, using candles while meditating can be very helpful. The light from the candles has a charm in it.
Also the very act of lighting the candles in the first place helps settle the mind and bring it to awareness. When we light a candle we are saying to ourselves, "Now it's time to meditate." Lighting the candle is a little mindfulness ritual.