Determine color of individual radio buttons within a specific form

How do I determine the color of individual radio buttons within a specific form? I have tried multiple CSS approaches but they seem to be overridden by something central within Squarespace.

For simplicity, you can see a public mock form at https://www.thezenly.com/espresso-boarding-poll-agencies that contains two buttons. For the purpose of learning, I would like to style the 'Agencies are critical' button green when unclicked but black when clicked. The other button, 'Skip the agency,' would be red when unclicked and black when clicked.

Thanks in advance.

Hi,

I see you figured it out or still need help?

Hello. I found a work around but failed to mark this as complete. Apologies.