Custom icon

Actually no. I am looking for a way to create the custom icon that I will use as a component. For example

​
Shopware.Module.register('custom-module', { 
  type: 'plugin', 
  name: 'Custom', 
  title: 'Custom module', 
  description: 'Description for your custom module', 
  color: '#62ff80', 
  icon: 'my-custom-icon', 
});

​

Is there a way to create ‘my-custom-icon’ ?