Possibility to change pay button color and disable country input

[emmaxCreative]

Is your feature request related to a problem? (please describe)
I would like a way to customize the paymentSheet. especially the color of the pay button to represent my apps overall look and feel.
I would also like to hide the country input or atleast preselect it to a certain country and ZIP.
Other ways to customize like for example a borderRadius for the paymentSheet would be great but not so important at the moment.

Describe the solution you'd like
A way to pass colors or booleans in order to change certain parts of the paymentSheet.

Describe alternatives you've considered
I used the CardField but there is an issue with the view in combination with a FAB #152 so it is unusable

Additional context

Here the blue is completely out of context because the color is never used in my app.
Also the country selection is really irrelevant because the user needs to insert his shipping address before the payment is invoked

[UsamaKarim]

Can it be implemented in Beta Stage?

[remonh87]

We are dependent on Stripe for implementing this feature feel free to add a request on their respective GitHub pages.

[remonh87]

See: stripe/stripe-ios#1932

[remonh87]

payment button can be changed from version 3.1.0 . See #320 for tracking the country issue