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  "identifier" : "/documentation/AppKit/NSAppearanceCustomization",
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# NSAppearanceCustomization

A set of methods for getting and setting the appearance attributes of a view.

```
protocol NSAppearanceCustomization : NSObjectProtocol
```

## Overview

When an object adopts this protocol, assigning a value to the [`appearance`](/documentation/AppKit/NSAppearanceCustomization/appearance) property causes that object to use the appearance attributes you specified instead of any inherited attributes. You can access the current attributes for the object from the [`effectiveAppearance`](/documentation/AppKit/NSAppearanceCustomization/effectiveAppearance) property, which reflects any inherited attributes.

## Topics

### Getting and Setting Appearance

[Choosing a Specific Appearance for Your macOS App](/documentation/AppKit/choosing-a-specific-appearance-for-your-macos-app)

Adopt a specific appearance for your windows, views, or app when it is inappropriate to support both light and dark variants.

[`appearance`](/documentation/AppKit/NSAppearanceCustomization/appearance)

The appearance of the receiver, in an `NSAppearance` object.

[`effectiveAppearance`](/documentation/AppKit/NSAppearanceCustomization/effectiveAppearance)

The appearance that will be used when the receiver is drawn onscreen, in an `NSAppearance` object. (read-only)


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