Branding Setup Contact Centre SDK for iOS/Android

We are looking to change the look and feel of the Chat experience with the embedded Contact Centre SDK for chat on iOS and Android inside our React Native app. The entry point from Contact Centre configuration in Zoom Admin is configured with required branding for colours palette etc for the chat window but it is not picked up inside the mobile experience via the SDK. What is required to enable the required styling inside the Contact Centre SDK? Is that done local to the SDK or retrieved via the entry point.