Recording radio button borders not clearly visible in dark mode

[ethancrawford]

See below:

I have played around a little bit to attempt to update the radio button styles to be similar to the checkboxes, but can't get them exactly the same size and have a perfectly circular shape at the same time. The closest I have been able to get is as follows: (checkboxes also visible for reference):

Would a PR for the code of the above attempt be of interest?