data(){
return {
      colors: [
        "red",
        "blue",
        "green",
        "indigo",
        "purple",
        "teal",
        "orange",
        "brown",
        "deep-orange",
        "blue-grey",
        "cyan"
      ],
      currentColor: ""
    }
},

 methods: {
    randomColors() {
      this.currentColor = 
        this.colors[Math.floor(Math.random() * this.colors.length)];
    },
  }