Web Messaging SDK v3 configuration overrides for launcher position and theme colors

The Web Messaging SDK init() call completes without throwing a JS exception, but the rendered UI ignores the launcher and theme properties passed in the config object. Specifically, the launcher icon remains fixed at the bottom-right corner despite setting position: 'left', and the primary color defaults to the Genesys Cloud brand blue instead of our custom hex code #2C3E50.

I am attempting to programmatically configure the deployment via the genesys-cloud-messaging SDK within a React application. The goal is to align the widget aesthetics with our enterprise dashboard, which is built using the same analytics APIs I use for reporting. I have verified that the deploymentId is correct and the user is authenticated, but the visual customization seems to be locked or ignored by the client-side renderer.

Here is the initialization snippet:

import { init } from 'genesys-cloud-messaging';

const config = {
 deploymentId: 'a1b2c3d4-5678-90ab-cdef-1234567890ab',
 theme: {
 primaryColor: '#2C3E50',
 backgroundColor: '#FFFFFF',
 textColor: '#333333'
 },
 launcher: {
 position: 'left',
 offsetX: 20,
 offsetY: 20
 }
};

init(config);

Environment details:

• SDK Version: genesys-cloud-messaging@3.1.0
• Browser: Chrome 114.0.5735.199
• Host Application: React 18.2.0
• Deployment Type: Standard Web Messaging

I have checked the browser network tab and see the initial GET request to /api/v2/webmessaging/deployments/{deploymentId} succeeds with a 200 OK. The response payload contains the correct theme and launcher settings as defined in the Genesys Cloud admin console, which suggests the issue might be a conflict between the runtime config object and the server-side deployment configuration, or perhaps the SDK requires a specific flag to allow runtime overrides.

Has anyone successfully overridden the launcher position and colors via the SDK init parameters? Is there a known limitation where the admin console settings take precedence over the client-side config, or am I missing a required property in the config object?

Ah, this is a recognized issue with how the Web Messaging SDK v3 parses the initial configuration object before the platform client is fully initialized. The init() method is asynchronous, and passing config directly in the synchronous call often results in those properties being ignored or overridden by defaults before the DOM is ready.

You need to ensure the configuration is applied after the SDK has loaded but before the widget renders. Use the setConfig method explicitly after initialization, or pass the config via the genesys.cloud.webmessaging.sdk global variable before calling init().

Here is the working pattern:

// 1. Define config globally before init
window['genesys.cloud.webmessaging.sdk'] = {
 config: {
 launcher: {
 position: 'left', // 'left' or 'right'
 iconUrl: 'https://yourdomain.com/icon.svg' // Optional custom icon
 },
 theme: {
 primary: '#2C3E50', // Your custom hex
 secondary: '#FFFFFF',
 textPrimary: '#000000'
 }
 }
};

// 2. Initialize
const sdk = new GenesysCloudWebMessagingSdk({
 deploymentId: 'YOUR_DEPLOYMENT_ID',
 region: 'us-east-1' // Adjust for your region
});

sdk.init();

If you are using a React or Vue wrapper, ensure the deploymentId and region are passed correctly, and that the config object is not being mutated after the initial render. Check the browser console for WebMessaging: Config updated logs to verify the theme application.

This approach bypasses the race condition where the UI renders before the config is parsed.