colorSpec.js

export class ColorSpecification {
  
  /**
   * @param color: String
   */
  constructor(color) {
    this.color = color
  }

 /**
  * Spec Description
  * @param {Product} product
 */
 isSatisfied(product) {
   // check is product have color here..
   let colorFound = false
   // Color is index "0"
   const colors = product.options[0].values 
  
   if(colors.indexOf(this.color) !== -1) colorFound = true

   return colorFound
 }}