diff --git a/app/src/main/res/layout/tab_tray_grid_item.xml b/app/src/main/res/layout/tab_tray_grid_item.xml
index 6e37faeee..7da9c2c9d 100644
--- a/app/src/main/res/layout/tab_tray_grid_item.xml
+++ b/app/src/main/res/layout/tab_tray_grid_item.xml
@@ -103,7 +103,7 @@ A FrameLayout here is an efficient way of having a views stack while allowing:
                     android:importantForAccessibility="no"
                     android:padding="22dp"
                     app:srcCompat="@drawable/mozac_ic_globe"
-                    app:tint="?tabTrayThumbnailIcon" />
+                    app:tint="?iconSecondary" />
 
                 <mozilla.components.browser.tabstray.thumbnail.TabThumbnailView
                     android:id="@+id/mozac_browser_tabstray_thumbnail"
diff --git a/app/src/main/res/layout/tab_tray_item.xml b/app/src/main/res/layout/tab_tray_item.xml
index e62a9b1dc..3e7f461e8 100644
--- a/app/src/main/res/layout/tab_tray_item.xml
+++ b/app/src/main/res/layout/tab_tray_item.xml
@@ -44,7 +44,7 @@
             android:importantForAccessibility="no"
             android:padding="22dp"
             app:srcCompat="@drawable/mozac_ic_globe"
-            app:tint="?tabTrayThumbnailIcon" />
+            app:tint="?iconSecondary" />
 
         <mozilla.components.browser.tabstray.thumbnail.TabThumbnailView
             android:id="@+id/mozac_browser_tabstray_thumbnail"
diff --git a/app/src/main/res/values-night/colors.xml b/app/src/main/res/values-night/colors.xml
index c9eae2f8b..01fff6743 100644
--- a/app/src/main/res/values-night/colors.xml
+++ b/app/src/main/res/values-night/colors.xml
@@ -84,7 +84,7 @@
     <!-- Inactive tab -->
     <color name="fx_mobile_icon_color_primary_inactive">@color/photonLightGrey05A60</color>
     <!-- Secondary icon -->
-    <color name="fx_mobile_icon_color_secondary" tools:ignore="UnusedResources">@color/photonLightGrey40</color>
+    <color name="fx_mobile_icon_color_secondary">@color/photonLightGrey40</color>
     <!-- Active tab -->
     <color name="fx_mobile_icon_color_active">@color/photonViolet40</color>
     <!-- Disabled icon -->
@@ -142,7 +142,6 @@
 
     <!-- Tab tray -->
     <color name="tab_tray_item_background_normal_theme">@color/photonDarkGrey80</color>
-    <color name="tab_tray_item_thumbnail_icon_normal_theme">@color/photonDarkGrey05</color>
 
     <!-- Reader View colors -->
     <color name="mozac_feature_readerview_text_color">@color/fx_mobile_text_color_primary</color>
diff --git a/app/src/main/res/values/attrs.xml b/app/src/main/res/values/attrs.xml
index e2c1a29d0..a0fd6ac90 100644
--- a/app/src/main/res/values/attrs.xml
+++ b/app/src/main/res/values/attrs.xml
@@ -25,6 +25,8 @@
     <attr name="textActionPrimary" format="reference" />
 
     <!-- Icon -->
+    <!-- Secondary icon -->
+    <attr name="iconSecondary" format="reference" />
     <!-- Active tab -->
     <attr name="iconActive" format="reference" />
     <!-- Icon inverted (on color) -->
@@ -76,9 +78,6 @@
     <attr name="awesomeBarIndicatorColor" format="reference|color"/>
     <attr name="awesomeBarIndicatorBookmarkColor" format="reference|color"/>
 
-    <!-- Tab tray -->
-    <attr name="tabTrayThumbnailIcon" format="reference" />
-
     <declare-styleable name="TrackingProtectionCategory">
         <attr name="categoryItemTitle" format="reference" />
         <attr name="categoryItemDescription" format="reference" />
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index eb22c194e..8443546ba 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -84,7 +84,7 @@
     <!-- Inactive tab -->
     <color name="fx_mobile_icon_color_primary_inactive">@color/photonDarkGrey90A60</color>
     <!-- Secondary icon -->
-    <color name="fx_mobile_icon_color_secondary" tools:ignore="UnusedResources">@color/photonDarkGrey05</color>
+    <color name="fx_mobile_icon_color_secondary">@color/photonDarkGrey05</color>
     <!-- Active tab -->
     <color name="fx_mobile_icon_color_active">@color/photonInk20</color>
     <!-- Disabled icon -->
@@ -209,7 +209,7 @@
     <!-- Inactive tab -->
     <color name="fx_mobile_private_icon_color_primary_inactive" tools:ignore="UnusedResources">@color/photonLightGrey05A60</color>
     <!-- Secondary icon -->
-    <color name="fx_mobile_private_icon_color_secondary" tools:ignore="UnusedResources">@color/photonLightGrey40</color>
+    <color name="fx_mobile_private_icon_color_secondary">@color/photonLightGrey40</color>
     <!-- Active tab -->
     <color name="fx_mobile_private_icon_color_active">@color/photonViolet40</color>
     <!-- Disabled icon -->
@@ -281,7 +281,6 @@
 
     <!-- Tab tray -->
     <color name="tab_tray_item_background_normal_theme">@color/photonLightGrey10</color>
-    <color name="tab_tray_item_thumbnail_icon_normal_theme">@color/photonLightGrey60</color>
 
     <!-- Bookmark buttons -->
     <color name="bookmark_favicon_background">#DFDFE3</color>
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index 68d04c219..f2c937bfa 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -53,6 +53,8 @@
         <item name="textActionPrimary">@color/fx_mobile_text_color_action_primary</item>
 
         <!-- Icon -->
+        <!-- Secondary icon -->
+        <item name="iconSecondary">@color/fx_mobile_icon_color_secondary</item>
         <!-- Active tab -->
         <item name="iconActive">@color/fx_mobile_icon_color_active</item>
         <!-- Icon inverted (on color) -->
@@ -110,8 +112,6 @@
         <item name="mozac_widget_favicon_background_color">@color/fx_mobile_layer_color_2</item>
         <item name="mozac_widget_favicon_border_color">@color/fx_mobile_border_color_primary</item>
 
-        <item name="tabTrayThumbnailIcon">@color/tab_tray_item_thumbnail_icon_normal_theme</item>
-
         <!-- Drawables -->
         <item name="fenixLogo">@drawable/ic_logo_wordmark_normal</item>
         <item name="homeBackground">@color/fx_mobile_layer_color_1</item>
@@ -246,6 +246,8 @@
         <item name="textActionPrimary">@color/fx_mobile_private_text_color_action_primary</item>
 
         <!-- Icon -->
+        <!-- Secondary icon -->
+        <item name="iconSecondary">@color/fx_mobile_private_icon_color_secondary</item>
         <!-- Active tab -->
         <item name="iconActive">@color/fx_mobile_private_icon_color_active</item>
         <!-- Icon inverted (on color) -->
@@ -301,9 +303,6 @@
         <item name="mozac_widget_favicon_background_color">@color/photonInk50</item>
         <item name="mozac_widget_favicon_border_color">@color/photonInk50</item>
 
-        <!-- Tab Tray -->
-        <item name="tabTrayThumbnailIcon">@color/tab_tray_item_thumbnail_icon_normal_theme</item>
-
         <!-- Drawables -->
         <item name="fenixLogo">@drawable/ic_logo_wordmark_private</item>
         <item name="homeBackground">@drawable/private_home_background_gradient</item>