Getting close to the end but missing how to set an incoming msg. In my example I have three buttons and when I press one the others grey out and the one turns green. Pressing any other one works the same. What I want to do is set one to green on power up. Can't seem to get that piece working. Found some code from @buckskin that I modified but obviously missing a piece.
<template>
    <v-app>
        <div class="justify-center ma-4">
            <v-card class="a2" width="100%" outlined>
                <v-card-title class="a1" :class="justify-center">{{msg.payload}}</v-card-title>
                <v-card-actions>
                    <v-btn class="btnBasic" :class="btnClass2" stacked @click="Power_Off">
                        <v-icon class="iconBasic" ref="icon1">{{icon1}}</v-icon>{{msg.payload1}}
                    </v-btn>
                    <v-btn class="btnBasic" :class="btnClass2" stacked @click="Power_On">
                        <v-icon class="iconBasic" ref="icon2">{{icon2}}</v-icon>Power On
                    </v-btn>
                    <v-btn class="btnBasic" :class="btnClass2" stacked @click="Power_Next">
                        <v-icon class="iconBasic" ref="icon3">{{icon3}}</v-icon>Power Never
                    </v-btn>
                </v-card-actions>
            </v-card>
        </div>
    </v-app>
</template>
<script>
    export default {
    data() {
        return {
            value: "OFF",
            icon1: "mdi-bed",
			icon2: "mdi-cog",
			icon3: "mdi-abacus",
        };
    },
    
    watch: {
      msg: function(){
          if (msg.payload == "start") {                  
            this.icon1 = "mdi-cog";
            this.$refs.icon1.$el.style.color = 'green';
            this.$refs.icon1.$el.style.textShadow = '0px 0px 10px #BD9608';
            this.$refs.icon2.$el.style.color = 'grey';
            this.$refs.icon2.$el.style.textShadow = '0px 0px 10px #BD9608';
            this.$refs.icon3.$el.style.color = 'grey';
            this.$refs.icon3.$el.style.textShadow = '0px 0px 10px #BD9608';	
          }
      }
    },
  
    methods: {
        Power_Off: function () {
            this.icon1 = "mdi-cog";
            this.$refs.icon1.$el.style.color = 'green';
            this.$refs.icon1.$el.style.textShadow = '0px 0px 10px #BD9608';
            this.$refs.icon2.$el.style.color = 'grey';
            this.$refs.icon2.$el.style.textShadow = '0px 0px 10px #BD9608';
            this.$refs.icon3.$el.style.color = 'grey';
            this.$refs.icon3.$el.style.textShadow = '0px 0px 10px #BD9608';				
            this.send({topic: "Power", payload:"Off"});   
        },
			
		Power_On: function () {
            this.icon1 = "mdi-bed";
            this.$refs.icon1.$el.style.color = 'grey';
            this.$refs.icon1.$el.style.textShadow = '0px 0px 10px #BD9608';
            this.$refs.icon2.$el.style.color = 'green';
            this.$refs.icon2.$el.style.textShadow = '0px 0px 10px #BD9608';
            this.$refs.icon3.$el.style.color = 'grey';
            this.$refs.icon3.$el.style.textShadow = '0px 0px 10px #BD9608';				
            this.send({topic: "Power", payload:"On"});
            },
			
		Power_Next: function () {
            this.$refs.icon1.$el.style.color = 'grey';
            this.$refs.icon1.$el.style.textShadow = '0px 0px 10px #BD9608';
            this.$refs.icon2.$el.style.color = 'grey';
            this.$refs.icon2.$el.style.textShadow = '0px 0px 10px #BD9608';		
            this.$refs.icon3.$el.style.color = 'green';
            this.$refs.icon3.$el.style.textShadow = '0px 0px 10px #BD9608';					
            this.send({topic: "Power", payload:"On"});
            },
        
	
    },
}
</script>
<style scoped>
    .btnBasic {
        background-color: #4F4F4F;
        /* Very dark gray */
        color: white;
        border-radius: 8px;
        /*width: 75px !important;*/
        height: 100% !important;
    }
    .btnBasic1 {
        background-color: #4F4F4F;
        /* Very dark gray */
        color: green;
        border-radius: 8px;
        /*width: 75px !important;*/
        height: 100% !important;
    }
    .btnBasic :hover {
        background-color: blue;
        /* Very dark gray */
        color: red;
        border-radius: 8px;
        /*width: 75px !important;*/
        height: 100% !important;
    }
    .btnOn {
        color: green;
        /* Dark washed rose */
    }
    .btnOff {
        color: darkgrey;
    }
    .iconBasic {
        font-size: 45px;
        height: 100%;
        width: 45px;
    }
    .iconOn {
        color: red;
        text-shadow: 0px 0px 0px;
        ;
    }
    .iconOff {
        color: darkgrey;
        text-shadow: 0px 0px 0px;
    }
    .a1 {
        /*    background-color:red; */
        height: 50px;
        margin-bottom: 1px;
        font-size: 16px;
        background-color: #303030;
        color: white;
        text-align: center padding-bottom: 4px;
        border-bottom: 2px solid #DD7F00;
    }
    .a2 {
        background-color: black;
        height: 100%;
        margin-top: 1px;
        font-size: 60px;
        color: #D7DBDD;
    }
    .b1 {
        color: #6689A1;
        height: 25px;
        margin-bottom: 1px;
        font-size: 16px;
        padding-bottom: 4px;
        border-bottom: 2px solid #DD7F00;
    }
    .b2 {
        height: 100%;
        margin-top: 1px;
        font-size: 28px;
        color: #D7DBDD;
    }
</style>
Feel like I'm swimming in the deep end of the pool.
Any help appreciated,
Thanks