diff --git a/packages/overlays/NavigationBarModeGesturalOverlay/res/values/dimens.xml b/packages/overlays/NavigationBarModeGesturalOverlay/res/values/dimens.xml
index 1232201..ac1f022 100644
--- a/packages/overlays/NavigationBarModeGesturalOverlay/res/values/dimens.xml
+++ b/packages/overlays/NavigationBarModeGesturalOverlay/res/values/dimens.xml
@@ -25,6 +25,6 @@
     <dimen name="navigation_bar_width">16dp</dimen>
     <!-- Height of the bottom navigation / system bar. -->
     <dimen name="navigation_bar_frame_height">48dp</dimen>
-        <!-- The height of the bottom navigation gesture area. -->
+    <!-- The height of the bottom navigation gesture area. -->
     <dimen name="navigation_bar_gesture_height">32dp</dimen>
 </resources>
\ No newline at end of file
diff --git a/packages/overlays/NavigationBarModeGesturalOverlayExtraWideBack/res/values/config.xml b/packages/overlays/NavigationBarModeGesturalOverlayExtraWideBack/res/values/config.xml
index c8f994c..d5991f3 100644
--- a/packages/overlays/NavigationBarModeGesturalOverlayExtraWideBack/res/values/config.xml
+++ b/packages/overlays/NavigationBarModeGesturalOverlayExtraWideBack/res/values/config.xml
@@ -37,6 +37,15 @@
      {@link Window#setEnsuringNavigationBarContrastWhenTransparent}. -->
     <bool name="config_navBarNeedsScrim">false</bool>
 
+    <!-- Controls the opacity of the navigation bar depending on the visibility of the
+     various workspace stacks.
+     0 - Nav bar is always opaque when either the freeform stack or docked stack is visible.
+     1 - Nav bar is always translucent when the freeform stack is visible, otherwise always
+         opaque.
+     2 - Nav bar is never forced opaque.
+     -->
+    <integer name="config_navBarOpacityMode">2</integer>
+
     <!-- Controls whether seamless rotation should be allowed even though the navbar can move
          (which normally prevents seamless rotation). -->
     <bool name="config_allowSeamlessRotationDespiteNavBarMoving">true</bool>
diff --git a/packages/overlays/NavigationBarModeGesturalOverlayExtraWideBack/res/values/dimens.xml b/packages/overlays/NavigationBarModeGesturalOverlayExtraWideBack/res/values/dimens.xml
index 987d203..ac1f022 100644
--- a/packages/overlays/NavigationBarModeGesturalOverlayExtraWideBack/res/values/dimens.xml
+++ b/packages/overlays/NavigationBarModeGesturalOverlayExtraWideBack/res/values/dimens.xml
@@ -25,4 +25,6 @@
     <dimen name="navigation_bar_width">16dp</dimen>
     <!-- Height of the bottom navigation / system bar. -->
     <dimen name="navigation_bar_frame_height">48dp</dimen>
+    <!-- The height of the bottom navigation gesture area. -->
+    <dimen name="navigation_bar_gesture_height">32dp</dimen>
 </resources>
\ No newline at end of file
diff --git a/packages/overlays/NavigationBarModeGesturalOverlayNarrowBack/res/values/config.xml b/packages/overlays/NavigationBarModeGesturalOverlayNarrowBack/res/values/config.xml
index 693110a..ff507ee 100644
--- a/packages/overlays/NavigationBarModeGesturalOverlayNarrowBack/res/values/config.xml
+++ b/packages/overlays/NavigationBarModeGesturalOverlayNarrowBack/res/values/config.xml
@@ -37,6 +37,15 @@
      {@link Window#setEnsuringNavigationBarContrastWhenTransparent}. -->
     <bool name="config_navBarNeedsScrim">false</bool>
 
+    <!-- Controls the opacity of the navigation bar depending on the visibility of the
+     various workspace stacks.
+     0 - Nav bar is always opaque when either the freeform stack or docked stack is visible.
+     1 - Nav bar is always translucent when the freeform stack is visible, otherwise always
+         opaque.
+     2 - Nav bar is never forced opaque.
+     -->
+    <integer name="config_navBarOpacityMode">2</integer>
+
     <!-- Controls whether seamless rotation should be allowed even though the navbar can move
          (which normally prevents seamless rotation). -->
     <bool name="config_allowSeamlessRotationDespiteNavBarMoving">true</bool>
diff --git a/packages/overlays/NavigationBarModeGesturalOverlayNarrowBack/res/values/dimens.xml b/packages/overlays/NavigationBarModeGesturalOverlayNarrowBack/res/values/dimens.xml
index 987d203..ac1f022 100644
--- a/packages/overlays/NavigationBarModeGesturalOverlayNarrowBack/res/values/dimens.xml
+++ b/packages/overlays/NavigationBarModeGesturalOverlayNarrowBack/res/values/dimens.xml
@@ -25,4 +25,6 @@
     <dimen name="navigation_bar_width">16dp</dimen>
     <!-- Height of the bottom navigation / system bar. -->
     <dimen name="navigation_bar_frame_height">48dp</dimen>
+    <!-- The height of the bottom navigation gesture area. -->
+    <dimen name="navigation_bar_gesture_height">32dp</dimen>
 </resources>
\ No newline at end of file
diff --git a/packages/overlays/NavigationBarModeGesturalOverlayWideBack/res/values/config.xml b/packages/overlays/NavigationBarModeGesturalOverlayWideBack/res/values/config.xml
index 5cd6ce3..378756a 100644
--- a/packages/overlays/NavigationBarModeGesturalOverlayWideBack/res/values/config.xml
+++ b/packages/overlays/NavigationBarModeGesturalOverlayWideBack/res/values/config.xml
@@ -37,6 +37,15 @@
      {@link Window#setEnsuringNavigationBarContrastWhenTransparent}. -->
     <bool name="config_navBarNeedsScrim">false</bool>
 
+    <!-- Controls the opacity of the navigation bar depending on the visibility of the
+     various workspace stacks.
+     0 - Nav bar is always opaque when either the freeform stack or docked stack is visible.
+     1 - Nav bar is always translucent when the freeform stack is visible, otherwise always
+         opaque.
+     2 - Nav bar is never forced opaque.
+     -->
+    <integer name="config_navBarOpacityMode">2</integer>
+
     <!-- Controls whether seamless rotation should be allowed even though the navbar can move
          (which normally prevents seamless rotation). -->
     <bool name="config_allowSeamlessRotationDespiteNavBarMoving">true</bool>
diff --git a/packages/overlays/NavigationBarModeGesturalOverlayWideBack/res/values/dimens.xml b/packages/overlays/NavigationBarModeGesturalOverlayWideBack/res/values/dimens.xml
index 987d203..ac1f022 100644
--- a/packages/overlays/NavigationBarModeGesturalOverlayWideBack/res/values/dimens.xml
+++ b/packages/overlays/NavigationBarModeGesturalOverlayWideBack/res/values/dimens.xml
@@ -25,4 +25,6 @@
     <dimen name="navigation_bar_width">16dp</dimen>
     <!-- Height of the bottom navigation / system bar. -->
     <dimen name="navigation_bar_frame_height">48dp</dimen>
+    <!-- The height of the bottom navigation gesture area. -->
+    <dimen name="navigation_bar_gesture_height">32dp</dimen>
 </resources>
\ No newline at end of file