Im not an artist but i love natural phenomena (like light) so i love indigo...
I was playing with this scene, but it looks awful...

It is basically a water body, and the camera es positioned half underwater half above.. why there is a black line along the upper part of the water?.... and why it doesnt have caustics?.... i use it BidMLT.
I use the SandBox tool for model the surface.
Thanks for ur imput.

From México, Daniel Nieto .·.