fix #125137

src/vs/vscode.proposed.d.ts

@@ -904,14 +904,15 @@ declare module 'vscode' {
 		/**
 		 * The icon path or {@link ThemeIcon} for the terminal.
 		 */
-		readonly iconPath?: Uri | { light: Uri; dark: Uri } | { id: string, color?: { id: string } };
+		readonly iconPath?: Uri | { light: Uri; dark: Uri } | ThemeIcon
 	}
 
+
 	export interface ExtensionTerminalOptions {
 		/**
 		 * A themeIcon, Uri, or light and dark Uris to use as the terminal tab icon
 		 */
-		readonly iconPath?: Uri | { light: Uri; dark: Uri } | { id: string, color?: { id: string } };
+		readonly iconPath?: Uri | { light: Uri; dark: Uri } | ThemeIcon
 	}
 
 	//#endregion