diff --git a/app/src/main/res/layout/gallery_detail_header.xml b/app/src/main/res/layout/gallery_detail_header.xml
index 58ded743e..1d35e197e 100644
--- a/app/src/main/res/layout/gallery_detail_header.xml
+++ b/app/src/main/res/layout/gallery_detail_header.xml
@@ -122,11 +122,13 @@
         </RelativeLayout>
 
         <android.support.v7.widget.CardView
+            xmlns:app="http://schemas.android.com/apk/res-auto"
             android:id="@+id/action_card"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_marginLeft="@dimen/keyline_margin"
             android:layout_marginRight="@dimen/keyline_margin"
+            app:cardBackgroundColor="?attr/galleryDetailButtonBackgroundColor"
             style="@style/CardView.Normal">
 
             <LinearLayout
diff --git a/app/src/main/res/values/attrs.xml b/app/src/main/res/values/attrs.xml
index 5ca469af5..841024d6b 100644
--- a/app/src/main/res/values/attrs.xml
+++ b/app/src/main/res/values/attrs.xml
@@ -54,6 +54,7 @@
         <attr name="tagBackgroundColor" format="color"/>
 
         <attr name="galleryDetailHeaderBackgroundColor" format="color"/>
+        <attr name="galleryDetailButtonBackgroundColor" format="color"/>
 
         <attr name="gallerySliderBackgroundColor" format="color"/>
 
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index e9a2aec4a..a08416cd3 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -50,7 +50,7 @@
 
     <color name="widget_light">@color/grey_200</color>
     <color name="widget_dark">@color/grey_700</color>
-    <color name="widget_black">@color/grey_800</color>
+    <color name="widget_black">@color/grey_850</color>
 
     <color name="tag_group_background_light">@color/colorAccent</color>
     <color name="tag_group_background_dark">@color/grey_775</color>
@@ -60,6 +60,10 @@
     <color name="tag_background_dark">@color/grey_775</color>
     <color name="tag_background_black">@color/grey_875</color>
 
+    <color name="gallery_detail_button_background_light">@color/grey_100</color>
+    <color name="gallery_detail_button_background_dark">@color/grey_800</color>
+    <color name="gallery_detail_button_background_black">@color/grey_900</color>
+
     <color name="red_500">#fff44336</color>
     <color name="teal_500">#ff009688</color>
     <color name="teal_700">#ff00796b</color>
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index d581e84ef..08baf75db 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -45,6 +45,7 @@
         <item name="tagGroupBackgroundColor">@color/tag_group_background_light</item>
         <item name="tagBackgroundColor">@color/tag_background_light</item>
         <item name="galleryDetailHeaderBackgroundColor">?attr/contentColorThemePrimary</item>
+        <item name="galleryDetailButtonBackgroundColor">@color/gallery_detail_button_background_light</item>
 
         <item name="toolbarPopupTheme">@style/ThemeOverlay.AppCompat.Light</item>
         <item name="galleryDetailDivider">@drawable/divider_gallery_detail_light</item>
@@ -86,6 +87,7 @@
         <item name="tagGroupBackgroundColor">@color/tag_group_background_dark</item>
         <item name="tagBackgroundColor">@color/tag_background_dark</item>
         <item name="galleryDetailHeaderBackgroundColor">?attr/contentColorThemePrimary</item>
+        <item name="galleryDetailButtonBackgroundColor">@color/gallery_detail_button_background_dark</item>
 
         <item name="toolbarPopupTheme">@style/ThemeOverlay.AppCompat.Dark</item>
         <item name="galleryDetailDivider">@drawable/divider_gallery_detail_dark</item>
@@ -131,6 +133,7 @@
         <item name="tagGroupBackgroundColor">@color/tag_group_background_black</item>
         <item name="tagBackgroundColor">@color/tag_background_black</item>
         <item name="galleryDetailHeaderBackgroundColor">@android:color/black</item>
+        <item name="galleryDetailButtonBackgroundColor">@color/gallery_detail_button_background_black</item>
 
         <item name="toolbarPopupTheme">@style/ThemeOverlay.AppCompat.Dark</item>
         <item name="galleryDetailDivider">@drawable/divider_gallery_detail_dark</item>