Make custom style tiles border support DT

 - Make Custom style tiles border color align with others
 https://screenshot.googleplex.com/POkQCu73ua8.png
 https://screenshot.googleplex.com/YZfDUom3xko.png

 Bug: 157619317
 Test: manually

Change-Id: Ifc80f5e49ab357b4f2ed39f52eec43a632305625
diff --git a/res/drawable/option_border_edge_custom.xml b/res/drawable/option_border_edge_custom.xml
index 1863c5d..6d633c3 100644
--- a/res/drawable/option_border_edge_custom.xml
+++ b/res/drawable/option_border_edge_custom.xml
@@ -26,8 +26,7 @@
     <item android:state_activated="false">
         <shape android:shape="rectangle">
             <stroke
-                android:color="@color/black_24_alpha"
-                android:alpha="0.24"
+                android:color="@color/option_border_color"
                 android:width="@dimen/option_border_width" />
             <corners android:radius="?android:dialogCornerRadius" />
         </shape>