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# ParticleEmitterComponent.ParticleEmitter.ParticleColor.evolving(start:end:)

The particle’s color will start at the `start` color and transition over its lifetime to the `end` color.

```
case evolving(start: ParticleEmitterComponent.ParticleEmitter.ParticleColor.ColorValue, end: ParticleEmitterComponent.ParticleEmitter.ParticleColor.ColorValue)
```

---

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