Fix issue #591

app/src/main/res/values-night/themes.xml

@@ -224,7 +224,7 @@
         <item name="colorOnPrimaryContainer">@color/white</item>
         <item name="colorSecondary">@color/md_theme_dark_secondary</item>
         <item name="colorOnSecondary">@color/md_theme_dark_onSecondary</item>
-        <item name="colorSecondaryContainer">@color/black</item>
+        <item name="colorSecondaryContainer">@color/md_theme_dark_secondaryContainer</item>
         <item name="colorOnSecondaryContainer">@color/md_theme_dark_onSecondaryContainer</item>
         <item name="colorTertiary">@color/md_theme_dark_tertiary</item>
         <item name="colorOnTertiary">@color/md_theme_dark_onTertiary</item>