feat: dark mode

Vben

2021-04-07 5b8eb4a49a097a47caf491c44df427522ab58daa

 src/views/dashboard/workbench/components/SaleRadar.vue

@@ -32,7 +32,6 @@
            return;
          }
          setOptions({
            backgroundColor: '#fff',
            legend: {
              bottom: 0,
              data: ['Visits', 'Sales'],