Is there a way to call an Ember Octane component method with parameters and have it return the text without implementing a helper?

On Ember Octane versions, how would I call a method in the component.js so that it simply returns the string value into the hbs template (without creating a helper)?

For example, I want for each item in the list, pass the index value as a parameter into the randomColorClass() method in order to generate a random number between 0 and index value. I understand I could implement a new helper for it, but is there a way to simply do it direct in the component.js?

The reason I'm hesitant to use a helper is because helpers are "global" naturally and this color class is unique to and defined in this component only.

Component.js

randomColorClass(max) {
  const rand = Math.random() * max;
  return `color-${Math.floor(rand)}`;
}

Template.hbs

  <div class=>
    Hi, my name is 
  </div>