diff --git a/typings/src/global-config.ts b/typings/src/global-config.ts
index fa523ad..1cd177e 100644
--- a/typings/src/global-config.ts
+++ b/typings/src/global-config.ts
@@ -1,4 +1,5 @@
 import { AuthenticationConfig } from './auth-config.js';
+import { MeetAppearanceConfig } from './room-config.js';
 
 /**
  * Represents global config for OpenVidu Meet.
@@ -7,7 +8,9 @@ export interface GlobalConfig {
     projectId: string;
     securityConfig: SecurityConfig;
     webhooksConfig: WebhookConfig;
-    // roomsConfig: MeetRoomConfig;
+    roomsConfig?: {
+        appearance: MeetAppearanceConfig;
+    };
 }
 
 export interface WebhookConfig {
diff --git a/typings/src/room-config.ts b/typings/src/room-config.ts
index 7dc010a..3bd3689 100644
--- a/typings/src/room-config.ts
+++ b/typings/src/room-config.ts
@@ -5,6 +5,7 @@ export interface MeetRoomConfig {
     chat: MeetChatConfig;
     recording: MeetRecordingConfig;
     virtualBackground: MeetVirtualBackgroundConfig;
+    // appearance?: MeetAppearanceConfig;
 }
 
 /**
@@ -28,3 +29,21 @@ export interface MeetChatConfig {
 export interface MeetVirtualBackgroundConfig {
     enabled: boolean;
 }
+
+export interface MeetAppearanceConfig {
+    themes: MeetRoomTheme[];
+}
+
+export interface MeetRoomTheme {
+    name: string;
+    baseTheme: MeetRoomThemeMode;
+    backgroundColor?: string;
+    primaryColor?: string;
+    secondaryColor?: string;
+    surfaceColor?: string;
+}
+
+export const enum MeetRoomThemeMode {
+    LIGHT = 'light',
+    DARK = 'dark'
+}