Resolve #1806

input/src/main/res/values/styles.xml

@@ -4,7 +4,7 @@
   <style name="MD_Dialog_Input_Layout">
     <item name="android:layout_width">match_parent</item>
     <item name="android:layout_height">wrap_content</item>
-    <item name="boxBackgroundColor">@null</item>
+    <item name="boxBackgroundColor">@android:color/transparent</item>
   </style>
 
   <style name="MD_Dialog_Input_Layout.Message">

sample/src/main/res/values-v21/styles_parent.xml

@@ -3,10 +3,12 @@
 
   <style name="ThemeParent" parent="Theme.MaterialComponents.Light.DarkActionBar">
     <item name="android:navigationBarColor">?colorPrimaryDark</item>
+    <item name="sample_button_color">#80000000</item>
   </style>
 
   <style name="ThemeParent.Dark" parent="Theme.MaterialComponents">
     <item name="android:navigationBarColor">?colorPrimaryDark</item>
+    <item name="sample_button_color">#80000000</item>
   </style>
 
 </resources>

sample/src/main/res/values/attrs.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <attr format="color" name="sample_button_color"/>
+</resources>

sample/src/main/res/values/styles.xml

@@ -15,7 +15,7 @@
     <item name="md_button_casing">literal</item>
   </style>
 
-  <style name="AppTheme.Custom" parent="ThemeParent">
+  <style name="AppTheme.Custom" parent="ThemeParent.Dark">
     <item name="colorPrimary">@color/primary_custom</item>
     <item name="colorPrimaryDark">@color/primaryDark_custom</item>
     <item name="colorAccent">@color/accent_custom</item>
@@ -26,11 +26,10 @@
     <item name="md_font_body">@font/raleway_medium</item>
     <item name="md_font_button">@font/raleway_semibold</item>
     <item name="md_ripple_color">@color/primary_custom_translucent</item>
-    <item name="md_color_button_text">@color/accent_custom</item>
-
-    <item name="md_color_widget_unchecked">#00CC00</item>
-    <item name="md_color_widget">#CC0000</item>
 
+    <item name="android:windowBackground">@android:color/black</item>
+    <item name="sample_button_color">#424242</item>
+    <item name="md_background_color">#212121</item>
   </style>
 
   <style name="SampleHeader" tools:ignore="NewApi">
@@ -50,7 +49,7 @@
     <item name="android:layout_width">match_parent</item>
     <item name="android:layout_height">@dimen/sample_button_height</item>
     <item name="android:layout_marginTop">@dimen/sample_button_spacing</item>
-    <item name="backgroundTint">#80000000</item>
+    <item name="backgroundTint">?sample_button_color</item>
   </style>
 
 </resources>