The pic I snapped is the project demo scene, so it's definitely not light issue.
I found that in the demo scene, the color of the water is affected by animation, so it's not affect by color adjustment.
I tried several times, found that the water is good in my scene. But, since how I use the camera is usually a underground camera, so the wave strength effect is not so good. Especially if the light is too dark, the gloss can not be seen in some angle.
Yes, I'm asking for too much, wish you don't mind.
My unity version is unity3D pro 4.0.1f2
I used 2 different macs, one's video card is HD3000, the other is GTX660Ti.