Hi Aelis,
I would like to share what I know about the naadi's.
Ida, the left channel, according to my knowledge is of colour blue. It is side of your desire, emotions, femminine in nature, starts at the first center Mulaadhar. If you use too much of this side then the colour of this channel becomes black, and it is a cold channel which can fridge and person can go into depression. If person think too much about the past, cry all the time, or very emotional then left channel is weak. Cancer happenns because of this. In Sahaja Yoga, once you have the awakening of the Mother Kundalini, you can balance left channel by keeping candle in front of left hand or keeping right hand on mother earth and taking all the problems away through mother earth.
Pingala, the right channel is yellow in colour, becomes red when over used. Person who thinks too much, agressive, short tempered may have a hot right channel. Such person can be very restless. Diabetis, heart attack can happen because of this. In Sahaja yoga we can cool down right side by using ice pack on the liver, as liver provides the fat cells to brain which increases the thinking process and exausts liver. Keeping ice pack on liver or kepping left hand point towards sky, palm facing backwards through eather element. Again all this is possible once you awaken Mother Kundalini through Sahaja Yoga.
I'll write about it more latter as I am running late. Please check following link for Sahaja Yoga.
http://www.MysticBoard.com/posting.php?mode=quote&p=9142