Alpha blended particle has a black tint, how to fix?

I am currently using the Elemental Free particles for my game. The problem is that they use an additive shader, which causes the particles to be pure white since the background in my game is very light. Unfortunately, switching to alpha blending causes a black tint on the particle. Is there any way to make alpha blended not have this black tint? If possible without changing the textures.

This is how the particle looks with additive shader:

And this is how it looks with alpha blended shader: