Well you've cleaned it up a bit but totally broke what i wanted to achieve.
What i've TRIED todo was:
1. Red Particle fades to 50% Opacity
2. Red Particle spawns new invisible yellow Particle
3. Yellow Particle is in same place as red particle
4. Yellow Opacity is increased to near 100%
5. Killswitch for yellow Particle is set to fade it out and then destroy it