Enhanced radios and checkboxes

Not sure if the change in checkout_shipping_address and checkout_payment address is correct coded.
I added <label class="btn btn-default">..</label> around the radios.

NOTE: all payment modules which add input fields for credit card information (ex.: paypal_pro_dp.php) are not bootstrapped yet.
Is this planned, thought, pending?
Then the "hide labels for xs" changes should be applied there too?