Button Radios Widget: How to change background color of buttons with CSS?

I have another CSS related question, about the same type of widget, but on this form. 

https://www.jotform.com/build/200604275779157

How would I make one button option one color and the other a different color? I.e. one button red, and one green, to achieve this look?

You may use the next CSS to affect the buttons of the Button Radios widget:

/* First Button Background*/
label[for=r0] {
background: red !important;
}

/* First Button Font Color*/
label[for=r0] span {
color: white !important;
}

/* Second Button Font Color*/
label[for=r1] span {
color: #5dd548 !important;
}