---
title: color
framework: quartzcore
role: symbol
role_heading: Instance Property
path: quartzcore/caemittercell/color
---

# color

The color of each emitted object. Animatable.

## Declaration

```swift
var color: CGColor? { get set }
```

## Discussion

Discussion The specified color of the cell will vary by a random amount within the redRange, greenRange, blueRange and alphaRangevalues over the lifetime of the cell. The redSpeed, greenSpeed, blueSpeed, and alphaSpeed determine the rate of change. The default value of this property is a color object set to opaque white.

## See Also

### Setting Emitter Cell Visual Attributes

- [isEnabled](quartzcore/caemittercell/isenabled.md)
- [redRange](quartzcore/caemittercell/redrange.md)
- [greenRange](quartzcore/caemittercell/greenrange.md)
- [blueRange](quartzcore/caemittercell/bluerange.md)
- [alphaRange](quartzcore/caemittercell/alpharange.md)
- [redSpeed](quartzcore/caemittercell/redspeed.md)
- [greenSpeed](quartzcore/caemittercell/greenspeed.md)
- [blueSpeed](quartzcore/caemittercell/bluespeed.md)
- [alphaSpeed](quartzcore/caemittercell/alphaspeed.md)
- [magnificationFilter](quartzcore/caemittercell/magnificationfilter.md)
- [minificationFilter](quartzcore/caemittercell/minificationfilter.md)
- [minificationFilterBias](quartzcore/caemittercell/minificationfilterbias.md)
- [scale](quartzcore/caemittercell/scale.md)
- [scaleRange](quartzcore/caemittercell/scalerange.md)
- [contentsScale](quartzcore/caemittercell/contentsscale.md)