---
sourceDocument: Australia API Reference
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/api-reference

 Release :

    - australia

ft:locale :

    - en-US

ft:publication_title :

    - Australia API Reference

ft:clusterId :

    - crapiref

bundleId :

    - crapiref

workflow :

    - Creator


---

# NowVoiceDefaultTheme structure - iOS

# NowVoiceDefaultTheme structure - iOS {#ariaid-title1}

Release version: Australia  
Updated July 14, 2026  
![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read  
The default implementation of NowVoiceThemeable.
**Related concepts**   

* [NowVoiceThemeable protocol - iOS](https://servicenow-prod.fluidtopics.net/t_MbAcjx8gsbDauJxoWyuA "Sets the colors to apply to NowVoice UI elements.")

## NowVoiceDefaultTheme - init(nowUITheme: NowUIThemeable) {#ariaid-title2}

Creates an instance of NowVoiceDefaultTheme using the specified NowUIThemeable as the source for voice UI colors.
{#NVoiceDefaultTheme-init_O__table_pft_qzv_nvo6__entry__3}

| Name | Type | Description |
|-|-|-|
| nowUITheme | NowUIThemeable | Optional. Theme to use as the source for voice UI colors. Default: `NowUIDefaultTheme` |
[Table 1. Parameters]

{#NVoiceDefaultTheme-init_O__table_pft_qzv_nvo6}  
The following code example shows how to call this function.

    // Use the default NowUI theme
    let theme = NowVoiceDefaultTheme()

    // Or derive voice UI colors from a custom NowUI theme
    let customTheme = NowVoiceDefaultTheme(nowUITheme: MyNowUITheme())