diff --git a/app/src/main/res/color/content_reactive.xml b/app/src/main/res/color/content_reactive.xml
deleted file mode 100644
index 531c16d48..000000000
--- a/app/src/main/res/color/content_reactive.xml
+++ /dev/null
@@ -1,22 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?><!--
-  ~ Copyright 2018 Hippo Seven
-  ~
-  ~ Licensed under the Apache License, Version 2.0 (the "License");
-  ~ you may not use this file except in compliance with the License.
-  ~ You may obtain a copy of the License at
-  ~
-  ~     http://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
-  -->
-
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <item android:color="@color/content_activated" android:state_activated="true" />
-    <item android:color="@color/content" />
-
-</selector>
diff --git a/app/src/main/res/color/content_reactive_black.xml b/app/src/main/res/color/content_reactive_black.xml
deleted file mode 100644
index 63330b619..000000000
--- a/app/src/main/res/color/content_reactive_black.xml
+++ /dev/null
@@ -1,22 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?><!--
-  ~ Copyright 2018 Hippo Seven
-  ~
-  ~ Licensed under the Apache License, Version 2.0 (the "License");
-  ~ you may not use this file except in compliance with the License.
-  ~ You may obtain a copy of the License at
-  ~
-  ~     http://www.apache.org/licenses/LICENSE-2.0
-  ~
-  ~ Unless required by applicable law or agreed to in writing, software
-  ~ distributed under the License is distributed on an "AS IS" BASIS,
-  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  ~ See the License for the specific language governing permissions and
-  ~ limitations under the License.
-  -->
-
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
-
-    <item android:color="@color/content_activated_black" android:state_activated="true" />
-    <item android:color="@color/content_black" />
-
-</selector>
diff --git a/app/src/main/res/values-night/colors.xml b/app/src/main/res/values-night/colors.xml
index 3c53ba5ad..0f943f49f 100644
--- a/app/src/main/res/values-night/colors.xml
+++ b/app/src/main/res/values-night/colors.xml
@@ -17,12 +17,6 @@
 <resources>
 
     <color name="primary_drawable">#ffffffff</color>
-    <color name="secondary_drawable">#4dffffff</color>
-
-    <color name="content">@color/grey_825</color>
-    <color name="content_activated">@color/grey_600</color>
-    <color name="tag_group_background">@color/grey_775</color>
-    <color name="tag_background">@color/grey_775</color>
 
     <!-- divider -->
     <color name="divider">#20ffffff</color>
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index 874c023f2..21b02c292 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -16,37 +16,19 @@
 
 <resources>
     <color name="primary_drawable">#8a000000</color>
-    <color name="secondary_drawable">#42000000</color>
     <color name="primary_drawable_dark">#ffffffff</color>
     <color name="primary_drawable_black">#ccffffff</color>
     <color name="secondary_drawable_black">#3dffffff</color>
-    <color name="content">#fff</color>
-    <color name="content_black">@color/grey_925</color>
-    <color name="content_activated">@color/grey_300</color>
-    <color name="content_activated_black">@color/grey_700</color>
-    <color name="tag_group_background">@color/colorAccent</color>
-    <color name="tag_group_background_black">@color/grey_875</color>
-    <color name="tag_background">@color/colorPrimary</color>
-    <color name="tag_background_black">@color/grey_875</color>
     <color name="red_500">#fff44336</color>
     <color name="teal_500">#ff009688</color>
-    <color name="purple_a200">#ffe040fb</color>
     <color name="purple_a700">#ffaa00ff</color>
     <color name="cyan_600">#ff00acc1</color>
     <color name="light_green_600">#ff7cb342</color>
     <color name="yellow_800">#fff9a825</color>
     <color name="deep_orange_400">#ffff7043</color>
-    <color name="grey_925">#ff191919</color>
-    <color name="grey_875">#ff292929</color>
-    <color name="grey_825">#ff3a3a3a</color>
-    <color name="grey_775">#ff4a4a4a</color>
-    <color name="grey_700">#ff616161</color>
-    <color name="grey_600">#ff757575</color>
     <color name="grey_500">#ff9e9e9e</color>
-    <color name="grey_300">#ffe0e0e0</color>
     <color name="brown_500">#ff795548</color>
     <color name="colorPrimary">@color/teal_500</color>
-    <color name="colorAccent">@color/purple_a200</color>
     <color name="loading_indicator_red">#ffe53935</color>
     <color name="loading_indicator_purple">@color/purple_a700</color>
     <color name="loading_indicator_blue">#ff1d87e4</color>
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index ca3a6565c..ebeb87145 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -25,13 +25,13 @@
         <item name="colorEdgeEffect">@color/grey_500</item>
         <item name="dividerColor">@color/divider</item>
         <item name="colorControlNormal">@color/primary_drawable</item>
-        <item name="drawableColorSecondary">@color/secondary_drawable</item>
-        <item name="drawableColorThemePrimary">@color/primary_drawable</item>
-        <item name="guideBackgroundColor">#e5303030</item>
-        <item name="guideTitleColor">?android:attr/textColorPrimary</item>
-        <item name="guideTextColor">?android:attr/textColorSecondary</item>
-        <item name="tagGroupBackgroundColor">@color/tag_group_background</item>
-        <item name="tagBackgroundColor">@color/tag_background</item>
+        <item name="drawableColorSecondary">@color/material_dynamic_secondary50</item>
+        <item name="drawableColorThemePrimary">@color/material_dynamic_primary50</item>
+        <item name="guideBackgroundColor">@color/material_dynamic_neutral80</item>
+        <item name="guideTitleColor">@color/material_dynamic_primary70</item>
+        <item name="guideTextColor">@color/material_dynamic_primary50</item>
+        <item name="tagGroupBackgroundColor">@color/material_dynamic_primary50</item>
+        <item name="tagBackgroundColor">@color/material_dynamic_neutral50</item>
         <item name="android:windowActionBar">false</item>
         <item name="android:windowNoTitle">true</item>
         <item name="windowActionBar">false</item>
@@ -49,8 +49,6 @@
         <item name="drawableColorSecondary">@color/secondary_drawable_black</item>
         <item name="drawableColorThemePrimary">@color/primary_drawable_black</item>
         <item name="guideBackgroundColor">#e5000000</item>
-        <item name="tagGroupBackgroundColor">@color/tag_group_background_black</item>
-        <item name="tagBackgroundColor">@color/tag_background_black</item>
     </style>
 
     <!-- ============ -->