Radio

.radio class allows you to set quick and default radio input style.

Note: Add the radio label next to radio input

Type

.radio radio input with bullet
<div>
    <input type="radio" class="radio" id="choice-1"/> <label for="choice-1"><span class="fs-s2">Radio</span></label>
</div>

Disabled

Just add disabled attribute to make field disable.
<input type="radio" class="radio" id="choice" disabled/>
<label for="choice">
  <span class="fs-s2">Disabled Radio</span>
</label>

<input type="radio" class="radio" id="choice" checked disabled/>
<label for="choice">
  <span class="fs-s2">Checked Disabled Radio</span>
</label>

Color

Add color class to label and radio inherit the color of label. And if you want to change the color of radio only than change the color of text

<input type="radio" class="radio" id="color-1"/>
<label for="color-1" class="blue">
  <span class="fs-s2">Radio</span>
</label>

<input type="radio" class="radio" id="color-2"/>
<label for="color-2" class="indigo">
  <span class="fs-s2 gray">Radio</span>
</label>