Removing specific channels of color

Hi,
I am working on diving simulation. I diving as you go deeper color starts disappearing, for eg: after 20m you don't see the color red, after 30m you won't see green, after 50m you won't see blue everything turns to grey. I have to simulate this, I am not able to figure out how this could be done. Please share some ideas, code, or plugin. It would be of tremendous help to me.

Thanks in advance!!

 

I am no expert in the matter, as there may be an internal way to do this, with in Unity, barring that tho, what could work is to have 3 textures, that simulate each scenario. If you can make a transparent texture that you could place between the camera and world, this might achieve this effect.

 

One way is to use color adjustment image effects to desaturate individual channels (PM me if you have Pro and want an example). There probably is another way, but that's all I can think of at the moment.

 

Thanks @CPTechnologies for the help.