Change color of Particles per script

Hi, In my game, every player has a different color and I want their gameObject to emit particles that match the player color.

How can I do this via script?

I tried stuff like

 var trail=this.GetComponent(ParticleSystem);
 trail.particleEmitter.color=gameStatus.Players[playerId].color;

but it doesn't work (color not a member of particleEmitter)

I am using 3.5 beta but if it only works with the old particle system, I can also use this. I just need to know how to change the particle color via script.