Color remap channel greyed out for bifrostliquid Material

[Anonymous]

Hi,

I am quite new to maya and bifrost. I am doing a University project and have a problem.

I am trying to colour a sphere of liquid, with 2 different colours, using the color remap channel being set to density and then I would manually paint the density onto the object. 

The weird thing about this all is that before taking a break from University I managed to achieve this after installing vray.

However after coming back, the option to colour remap is now greyed out and I can't figure out what to do (clicking the little arrow down button doesn't do anything)

Do you think I need a clean reinstall of everything, or am I missing something? I am also curious if there is another, maybe more efficient way to have a liquid with different colours in specific locations?

Thanks in advance.

[calibrix]

I don't think the BiFrost Liquid Material is used or supported any longer by any of the renderers. Here's the Arnold Documentation on rendering bifrost: https://docs.arnoldrenderer.com/display/A5AFMUG/Legacy+Bifrost