Water Body River/ Shallow Water River Foam Shading

Hi Everyone,

I’m using UE6 and have built an environment that uses the Water Body River ,Combined with the Shallow Water River. Like in the Witcher tech demo. I have also added a Waterfall by Shadersource, which is also an excellent plugin. Both combined look epic.
A massive amount of tweaking and trial and error, but it’s getting there.

I’m not an expert and have come across an issue that ruins the scene. I can’t match the river foam with the materials on the waterfall. Looking closely, the river foam looks like it’s emissive. Does anyone know where I can find the settings for this and colour match the waterfall and river foam?

Many thanks