Thanks for the additional information, wheel-city,

I have checked the usual sources again, but I haven't found anything related.

The only questions I could think of: Can you switch the color management to something else?
Attribute Manager> Mode> Scene >Colormanagement
If you are in ACES, use for a test Legacy sRGB.
Or check in the Preferences> Viewport Display> System> Display Color profile, if a change will help.

Just wild questions, and since wild questions might waste your time, please check in with tech support.
https://www.maxon.net/en/support-center

Thank you!

My best wishes

Hi wheel-city,

Yes, feed both into the same particle Group “folder” and add a Blend Modifier to it.

The Particle Group can then be used in a new Vertex Map. Note that the Liquid Mesh is set to export Geometry and Color for this example.

Example and preview render
https://projectfiles.maxon.net/Cineversity_Forum_Support/2026_PROJECTS_DRS/20260113_CV4_2026_drs_26_PAsc_02.c4d.zip
Redshift Sampling is set to 1.0 for preview quality, and to speed things up, Global Illumination is off.

CV4_2026_drs_26_PAsc_01.jpg

This should get you close to the color mix you might need. Note that practical colors (subtractive or additive, as well as pigment-based mixtures) might mix differently, so some color grading later on is needed.

Let me know if you have any questions. I'm happy to look into it.

Enjoy

You're very welcome, wheel-city.

If you are in explorer mode, perhaps have a look here.
https://stcineversityprod02.blob.core.windows.net/$web/Cineversity_Forum_Support/2023_PROJECTS_DRS/20230514_CV4_2023_drs_23_RSvm_01.zip

I have transferred the Color to the Vertices. From there to a MoGraph Matrix Object. This, in return, allowed me to place the data into a Color Vertex Tag for the Volume Mesher.

It depends highly on the point density of the Object used to feed the Volume. In the example I kept it kind of low.

All the best

Screen Shot 2023-05-14 at 11.06.22 AM.jpg