To change the style of a specific option, within an option set, you will need to follow this example below.
- Add a Class Name to the option you want to add custom styles.

2. Add the following code to your Option Set Custom Styles section.
- Substitute “yourclassname” with the Class Name you gave your option in step 1.
.yourclassname {
/* your css styles here */
}
- Change the size of a Swatch Option
.yourclassname .swatch.swatch-image{
width: 55px !important;
height: 55px !important;
}