Change particle tint color via script

Hey all!

First, sorry for my bad english.

I´m using Legacy Shaders/Particles/Additive on a texture for a ParticleSystem in my game. This have a StartColor selected and this is working well.

Now, I wanna change this color at runtime.

So, in my Start method I set the particle material:

this.sphereMaterial = sphereParticle.GetComponent<ParticleSystemRenderer>().material;

And when I wanna change color and show the particle I do:

this.sphereMaterial.SetColor("_TintColor", new Color(1.0f, 0.0f, 0.0f, 1.0f));
this.sphereParticle.Play();

But now particle effect is not shown. Im forgetting something?

Use Color32 instead of Color.