I was reading that fish like dark surroundings and dimly lit water because they show their best colors and are less stressed. That's strike two for me, I have white gravel and 2 fluorescent lights. I want to get darker gravel but I don't know what kind of light to get. I have a 10 gallon with a hood that has two bulb spots in it. Incandescent lights to me look yellow. Does anyone have any ideas.