Use light colors regardless of device theme

paymentsheet-example/src/main/java/com/stripe/android/paymentsheet/example/samples/ui/paymentsheet/complete_flow/CompleteFlowViewState.kt

@@ -27,7 +27,11 @@ data class CompleteFlowViewState(
                 ),
                 // Set `allowsDelayedPaymentMethods` to true if your business can handle payment
                 // methods that complete payment after a delay, like SEPA Debit and Sofort.
-                allowsDelayedPaymentMethods = true
+                allowsDelayedPaymentMethods = true,
+                appearance = PaymentSheet.Appearance(
+                    colorsDark = PaymentSheet.Colors.defaultLight,
+                    colorsLight = PaymentSheet.Colors.defaultLight,
+                )
             )
     }
 }