diff --git a/app/src/main/res/layout/activity_send_email.xml b/app/src/main/res/layout/activity_send_email.xml
index 1487c03..b20d0f3 100644
--- a/app/src/main/res/layout/activity_send_email.xml
+++ b/app/src/main/res/layout/activity_send_email.xml
@@ -56,13 +56,13 @@
             android:id="@+id/inputCode1"
             android:layout_width="48dp"
             android:layout_height="50dp"
-            android:backgroundTint="#CCCCCC"
+            android:backgroundTint="@color/gray"
             android:gravity="center"
             android:imeOptions="actionNext"
             android:importantForAutofill="no"
             android:inputType="number"
             android:maxLength="1"
-            android:textColor="@color/white"
+            android:textColor="@color/gray"
             android:textSize="24sp"
             android:textStyle="bold"
             android:hint="*"
@@ -72,13 +72,13 @@
             android:id="@+id/inputCode2"
             android:layout_width="48dp"
             android:layout_height="50dp"
-            android:backgroundTint="#CCCCCC"
+            android:backgroundTint="@color/gray"
             android:gravity="center"
             android:imeOptions="actionNext"
             android:importantForAutofill="no"
             android:inputType="number"
             android:maxLength="1"
-            android:textColor="@color/white"
+            android:textColor="@color/gray"
             android:textSize="24sp"
             android:textStyle="bold"
             android:hint="*"
@@ -88,13 +88,13 @@
             android:id="@+id/inputCode3"
             android:layout_width="48dp"
             android:layout_height="50dp"
-            android:backgroundTint="#CCCCCC"
+            android:backgroundTint="@color/gray"
             android:gravity="center"
             android:imeOptions="actionNext"
             android:importantForAutofill="no"
             android:inputType="number"
             android:maxLength="1"
-            android:textColor="@color/white"
+            android:textColor="@color/gray"
             android:textSize="24sp"
             android:textStyle="bold"
             android:hint="*"
@@ -104,13 +104,13 @@
             android:id="@+id/inputCode4"
             android:layout_width="48dp"
             android:layout_height="50dp"
-            android:backgroundTint="#CCCCCC"
+            android:backgroundTint="@color/gray"
             android:gravity="center"
             android:imeOptions="actionNext"
             android:importantForAutofill="no"
             android:inputType="number"
             android:maxLength="1"
-            android:textColor="@color/white"
+            android:textColor="@color/gray"
             android:textSize="24sp"
             android:textStyle="bold"
             android:hint="*"
@@ -120,13 +120,13 @@
             android:id="@+id/inputCode5"
             android:layout_width="48dp"
             android:layout_height="50dp"
-            android:backgroundTint="#CCCCCC"
+            android:backgroundTint="@color/gray"
             android:gravity="center"
             android:imeOptions="actionNext"
             android:importantForAutofill="no"
             android:inputType="number"
             android:maxLength="1"
-            android:textColor="@color/white"
+            android:textColor="@color/gray"
             android:textSize="24sp"
             android:textStyle="bold"
             android:hint="*"
@@ -136,13 +136,13 @@
             android:id="@+id/inputCode6"
             android:layout_width="48dp"
             android:layout_height="50dp"
-            android:backgroundTint="#CCCCCC"
+            android:backgroundTint="@color/gray"
             android:gravity="center"
             android:imeOptions="actionNext"
             android:importantForAutofill="no"
             android:inputType="number"
             android:maxLength="1"
-            android:textColor="@color/white"
+            android:textColor="@color/gray"
             android:textSize="24sp"
             android:textStyle="bold"
             android:hint="*"