Need help with water

I have a scene where I've included the Advanced water example from the Water pro package. I've included the water indoors and I have a flashlight in the game. It's a pretty dark game so I've changed the render settings to a dark color. I want the water to look dark when I turn off the flashlight. It's still retaining it's original color when I turn off the flashlight while everything else goes dark. I'm new to Unity, please help.