---
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


---

# NowVoiceThemeDark class - Android

# NowVoiceThemeDark class - Android {#ariaid-title1}

Release version: Australia  
Updated July 21, 2026  
![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read  
A prebuilt dark theme implementation of NowVoiceTheme.

Apply the dark theme to the voice agent UI by passing it to [NowVoiceService - start()](https://servicenow-prod.fluidtopics.net/tRIQYHQALKmfk9GqAm~2BA#NVoiceServA-start_O_O_O_O_O "Launches the full-screen voice agent Activity. This is a suspend function that returns after the session ends.") or [NowVoiceService - updateTheme()](https://servicenow-prod.fluidtopics.net/tRIQYHQALKmfk9GqAm~2BA#NVoiceServA-updateTheme_O "Updates the visual theme of the currently active voice UI.").  
{#NowVoiceThemeDarkAndroidClass__table_ql4_mgy_zjc__entry__3}

| Name | Default | Description |
|-|-|-|
| actionablePrimaryAIBackgroundColorGradientEnd | #71D5FE | AI gradient background end color. |
| actionablePrimaryAIBackgroundColorGradientStart | #86F673 | AI gradient background start color. |
| alertCritical0 | #7B1D28 | Error and critical alert background (close button). |
| alertCritical4 | #ED9AA3 | Error and critical alert icon color. |
| alertInfo0 | #00446B | Info alerts background. |
| alertInfo3 | #3F9CD1 | Info alerts level 3. |
| alertLow2 | #717681 | Low priority alerts. |
| backgroundPrimary | #050809 | Neutral background and dialog background. |
| backgroundSecondary | #161F23 | Secondary background and user message bubbles. |
| brandBackground | #002934 | Transcript button background when selected. |
| destructive | #E46775 | Destructive actions and error states. |
| highlightGreen | #1E4A25 | Green highlight in voice chat. |
| highlightYellow | #4A3C00 | Yellow highlight in voice chat. |
| messagingIconPrimaryAIColor | #178BAB | Primary color for AI assistant icons. |
| presenceAvailable | #4EA800 | Presence available indicator in voice chat. |
| primary | #6CBBD0 | Primary action color, transcript icon when selected. |
| secondary | #99C6D2 | Animated background gradient shown during a voice interaction. |
| textActionable | #050809 | Text on action buttons or highlighted background. |
| textPrimary | #FFFFFF | Primary text color for UI elements. |
| textSecondary | #E2E5E7 | Secondary text color. |
| textTertiary | #BCC3C7 | Tertiary text color, connection state text. |
[Table 1. Properties]

{#NowVoiceThemeDarkAndroidClass__table_ql4_mgy_zjc}  
Figure 1. NowVoiceThemeDark color palette  
The following code example shows how to use NowVoiceThemeDark.

    //voiceService is an initialized NowVoiceService

    // Apply theme at voice session launch
    voiceService.start(context, endpoint, theme = NowVoiceThemeDark())

    // Or update theme while a voice session is active
    voiceService.updateTheme(NowVoiceThemeDark())

**Related concepts**   

* [NowVoiceTheme interface - Android](https://servicenow-prod.fluidtopics.net/~3xxmka~Nk2nyFwmsaYKhw "Customizes the visual appearance of the voice agent UI.")