Apexcharts How to use different color on opposite bar chart begin on specified value (not zero)

How to use different color on opposite bar chart begin on specified value (not zero).

I already explore the Apexcharts docs example and can’t found any similar approach for my need, all example always use zero value as an axis.

enter image description here

The above example use 0 value as the axis to begin the different bar color.

What I want is to use 50 value as the axis in this y-axis

yaxis: {
          min: 0,
          max: 100,
       }

series: [
    {
        name: 'title1',
        data: [80]
    },
    {
        name: 'title2',
        data: [20]
    }
],

All codes

new Vue({
        el: '#app',
        components: {
          apexchart: VueApexCharts,
        },
        data: {
            series: [
                {
                    name: 'title1',
                    data: [80]
                },
                {
                    name: 'title2',
                    data: [20]
                }
            ],
            chartOptions: {
                chart: {
                  type: 'bar',
                  height: 350
                },
                xaxis: {
                  categories: ['South Korea'
                  ],
                },
                yaxis: {
                  min: 0,
                  max: 100,
                },
                plotOptions: {
                  bar: {
                    borderRadius: 4,
                    borderRadiusApplication: 'end',
                    horizontal: false,
                  }
                },
                dataLabels: {
                  enabled: false
                },
            },
        },
        
    })