Add color to "Scan the QR code" in DeviceAddFragment

Fixes #4771
Closes #4776
// FREEBIE

res/layout/device_add_fragment.xml

@@ -43,7 +43,8 @@
 
             <TextView android:text="@string/device_add_fragment__scan_the_qr_code_displayed_on_the_device_to_link"
                       android:layout_width="wrap_content"
-                      android:layout_height="wrap_content"/>
+                      android:layout_height="wrap_content"
+                      android:textColor="#ff6d6d6d"/>
 
 
         </LinearLayout>