diff --git a/color-check-baseline.xml b/color-check-baseline.xml
index 21b9a09a212..1cf6b20077c 100644
--- a/color-check-baseline.xml
+++ b/color-check-baseline.xml
@@ -2113,38 +2113,6 @@
             column="17"/>
     </issue>
 
-    <issue
-        id="HardCodedColor"
-        severity="Error"
-        message="Avoid using hardcoded color"
-        category="Correctness"
-        priority="4"
-        summary="Using hardcoded color"
-        explanation="Hardcoded color values are bad because theme changes cannot be uniformly applied.Instead use the theme specific colors such as `?android:attr/textColorPrimary` in attributes.&#xA;This ensures that a theme change from a light to a dark theme can be uniformlyapplied across the app."
-        errorLine1="                android:background=&quot;#00ffffff&quot;"
-        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
-        <location
-            file="res/layout/preference_importance_slider.xml"
-            line="59"
-            column="17"/>
-    </issue>
-
-    <issue
-        id="HardCodedColor"
-        severity="Error"
-        message="Avoid using hardcoded color"
-        category="Correctness"
-        priority="4"
-        summary="Using hardcoded color"
-        explanation="Hardcoded color values are bad because theme changes cannot be uniformly applied.Instead use the theme specific colors such as `?android:attr/textColorPrimary` in attributes.&#xA;This ensures that a theme change from a light to a dark theme can be uniformlyapplied across the app."
-        errorLine1="                android:progressBackgroundTint=&quot;@color/importance_secondary_slider_color&quot;"
-        errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
-        <location
-            file="res/layout/preference_importance_slider.xml"
-            line="60"
-            column="17"/>
-    </issue>
-
     <issue
         id="HardCodedColor"
         severity="Error"
diff --git a/res/layout/preference_importance_slider.xml b/res/layout/preference_importance_slider.xml
deleted file mode 100644
index 38618079bb3..00000000000
--- a/res/layout/preference_importance_slider.xml
+++ /dev/null
@@ -1,78 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2015 The Android Open Source Project
-
-     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.
--->
-
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-              android:layout_width="match_parent"
-              android:layout_height="wrap_content"
-              android:minHeight="?android:attr/listPreferredItemHeight"
-              android:gravity="center_vertical"
-              android:paddingStart="?android:attr/listPreferredItemPaddingStart"
-              android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
-              android:paddingTop="8dp"
-              android:paddingBottom="8dp"
-              android:orientation="vertical"
-              android:clickable="false"
-              android:focusable="false" >
-
-    <TextView
-            android:id="@android:id/title"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:singleLine="true"
-            android:textAppearance="@android:style/TextAppearance.Material.Subhead"
-            android:textColor="?android:attr/textColorPrimary"
-            android:ellipsize="marquee"
-            android:fadingEdge="horizontal" />
-
-    <FrameLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content" >
-
-        <ImageView
-                android:id="@+id/auto_importance"
-                android:src="@drawable/notification_auto_importance"
-                android:layout_gravity="center_vertical|start"
-                android:layout_width="48dp"
-                android:layout_height="48dp" />
-
-        <SeekBar
-                android:id="@*android:id/seekbar"
-                android:layout_marginStart="56dp"
-                android:layout_marginEnd="32dp"
-                android:layout_gravity="center_vertical"
-                android:layout_width="match_parent"
-                android:layout_height="48dp"
-                android:focusable="true"
-                android:background="#00ffffff"
-                android:progressBackgroundTint="@color/importance_secondary_slider_color"
-                android:thumbTint="?android:attr/colorAccent"
-                android:progressTint="?android:attr/colorAccent"
-                style="@android:style/Widget.Material.SeekBar.Discrete"
-                android:tickMarkTint="@android:color/black" />
-
-    </FrameLayout>
-
-    <TextView
-            android:id="@android:id/summary"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_alignStart="@android:id/title"
-            android:textAlignment="viewStart"
-            android:textAppearance="@android:style/TextAppearance.Material.Body1"
-            android:textColor="?android:attr/textColorSecondary"
-            android:maxLines="10"
-            android:minLines="3" />
-</LinearLayout>
diff --git a/res/values/colors.xml b/res/values/colors.xml
index 3d86208c583..38ab8939b84 100644
--- a/res/values/colors.xml
+++ b/res/values/colors.xml
@@ -94,9 +94,6 @@
     <color name="message_icon_background_outgoing">#4285f4</color>
     <color name="message_icon_text_outgoing">#ffffffff</color>
 
-    <color name="importance_disabled_slider_color">@*android:color/material_grey_300</color>
-    <color name="importance_secondary_slider_color">#858383</color>
-
     <color name="usage_graph_dots">#B0BEC5</color>
 
     <!-- Gestures settings -->