@react-native-firebase/messaging/plugin/src/pluginConfig.ts

React Native Firebase - React Native Firebase provides native integration of Firebase Cloud Messaging (FCM) for both Android & iOS. FCM is a cost free service, allowing for server-device and device-device communication. The React Native Firebase Messaging

export interface PluginConfigType {
  android?: PluginConfigTypeAndroid;
}

export interface PluginConfigTypeAndroid {
  notificationIcon?: string;
  notificationColor?: string;
}