Video tutorial
https://www.youtube.com/watch?v=LLB3k-W3mgg
4:40s->
activate flipfluid developer tools , from addon preferences
tick geometry attributes from flipfluid menu
FLIP Flid Surface - Geometry Attributes
color attributes , tick
enable mixing , tick
make fluid animation
choose baked fluid simulation mesh
open shader editor
add
attribute, connect color to base color
name:flip_color
https://www.youtube.com/watch?v=LLB3k-W3mgg
8min50s ->
