Paypal Button color is confusing

When I or my clients try to use the confirm payment with pay/pal the button does not show up properly because it is white instead of green like my theme has everywhere else. It is also very confusing since there is another button to confirm the appointment which is grey and easy to see. I really think once we press the confirm it should go directly to pay/pal. Can you help make this workable for my site. This confusion is not really workable right now.