---
title: particleColorAlphaSpeed
framework: spritekit
role: symbol
role_heading: Instance Property
path: spritekit/skemitternode/particlecoloralphaspeed
---

# particleColorAlphaSpeed

The rate at which the alpha component of a particle’s color changes per second.

## Declaration

```swift
var particleColorAlphaSpeed: CGFloat { get set }
```

## Discussion

Discussion The default value is 0.0.

## See Also

### Configuring Particle Color

- [particleColorSequence](spritekit/skemitternode/particlecolorsequence.md)
- [particleColor](spritekit/skemitternode/particlecolor.md)
- [particleColorAlphaRange](spritekit/skemitternode/particlecoloralpharange.md)
- [particleColorBlueRange](spritekit/skemitternode/particlecolorbluerange.md)
- [particleColorGreenRange](spritekit/skemitternode/particlecolorgreenrange.md)
- [particleColorRedRange](spritekit/skemitternode/particlecolorredrange.md)
- [particleColorBlueSpeed](spritekit/skemitternode/particlecolorbluespeed.md)
- [particleColorGreenSpeed](spritekit/skemitternode/particlecolorgreenspeed.md)
- [particleColorRedSpeed](spritekit/skemitternode/particlecolorredspeed.md)