[Home](./index.md) > [server](./server.md) > [ParticleEmitterOptions](./server.particleemitteroptions.md) > [colorIntensityStart](./server.particleemitteroptions.colorintensitystart.md) ## ParticleEmitterOptions.colorIntensityStart property The color intensity of an emitted particle at the start of its lifetime. Values greater than 1 create HDR/bloom effects. **Signature:** ```typescript colorIntensityStart?: number; ```