Scaling visual effect assigned to a creature

Is there a way to scale visual effect assigned to creature appearance in the toolset just as there is an option to scale creature size? I’ve noticed that the effect remains the same even if creature is scaled down.
Neither did scaling via appearance.2da file worked. I also tried to find specific visual effect in visualeffects.2da file but is seems that there are only visuals for spells and they don’t even have parameters for scaling.
This is the visual effect name I’m trying to modify fx_willowisp_red_pe.

i think you’d have to copy out and modify the special effect files

I don’t think there’s a script method to do that. As kevL indicated, it’s a manual change. Seems like you should be able to filter an f/x file before it runs, at least in theory.