For #1876 - Correct Navigation Bar Color Logic (#2427)

app/src/main/java/org/mozilla/fenix/ThemeManager.kt

@@ -105,17 +105,13 @@ class DefaultThemeManager : ThemeManager {
             window: Window,
             context: Context
         ) {
-            if (android.os.Build.VERSION.SDK_INT > android.os.Build.VERSION_CODES.O) {
+            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
                 // API level can display handle light navigation bar color
                 window.decorView.systemUiVisibility =
                     window.decorView.systemUiVisibility or
                             View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR or
                             View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR
                 updateNavigationBar(window, context)
-            } else {
-                window.decorView.systemUiVisibility =
-                    window.decorView.systemUiVisibility or
-                            View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR
             }
         }
 

app/src/main/res/values-v23/styles.xml

@@ -9,9 +9,6 @@
             sure we also get them in 27+ -->
         <item name="android:statusBarColor">@android:color/transparent</item>
         <item name="android:windowLightStatusBar">@bool/theme_is_light</item>
-
-        <!-- Style the navigation bar -->
-        <item name="android:navigationBarColor">?foundation</item>
     </style>
 
     <style name="PrivateTheme" parent="PrivateThemeBase">