Updating 'option' not causing chart to redraw

[jeff-wishnie]

I am using a computed ref to return the Option prop that I pass to the v-charts component. The computed ref is recalculated based on various reactive values.

I can confirm that it updates, but the chart is not redrawing.

Here is a simplified example--what am I doing wrong?

<script setup>
   const currentColor = ref('blue'); // assume some UI lets the user change this 
   const opt = computed(()=> { ... series: [ { type: line, color: currentColor .value} ] ... });
</script>
<template>
    <div>
    <v-chart :option=opt />
     </div>
</template>

When 'currentColor' changes, the compute is run and so 'opt' changes, but the chart never redraws...