Update top-level-api.md

docs/top-level-api.md

@@ -56,7 +56,9 @@ Navigation.startTabBasedApp({
     initialTabIndex: 1, // optional, the default selected bottom tab. Default: 0
   },
   appStyle: {
-    orientation: 'portrait' // Sets a specific orientation to the entire app. Default: 'auto'. Supported values: 'auto', 'landscape', 'portrait'
+    orientation: 'portrait', // Sets a specific orientation to the entire app. Default: 'auto'. Supported values: 'auto', 'landscape', 'portrait'
+    bottomTabBadgeTextColor: 'red', // Optional, change badge text color. Android onlly
+    bottomTabBadgeBackgroundColor: 'green' // Optional, change badge background color. Android onlly
   },
   drawer: { // optional, add this if you want a side menu drawer in your app
     left: { // optional, define if you want a drawer from the left