MartinJD you can use only fontawesome icon /font icons
you need to edit the extension js right here:
elements : [
{
// html element to be spawned for this element
html: '<i class="fas fa-snowflake" aria-hidden="true"></i>',
// hex color for this element - works only for font based icons
color: '#cc2037'
},
{
// html element to be spawned for this element
html: '<i class="fas fa-snowflake" aria-hidden="true"></i>',
// hex color for this element - works only for font based icons
color: '#ffffff'
},
]
