Merge pull request #316 from SPOTeam/SPOT-231-FEAT-신청승인UI수정

FIX: popupWindow 바깥 테두리 색상 변경

Author: starshape7

SPOTeam_android/app/src/main/res/drawable/custom_popup_background.xml

@@ -2,5 +2,5 @@
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
     <solid android:color="#FFFFFF" />
     <corners android:radius="8dp" />
-    <stroke android:width="1dp" android:color="#D8D8D8" />
+    <stroke android:width="1dp" android:color="@color/g200" />
 </shape>