Changing Bar color is not working

[naiyyar]

Possible to change default bar colors? i'm trying using below code but still getting default colors

series: [{
        name: 'Profit',
        data: @data1,
        style: {
          color: "e6b7b7",
          width: 0.25
        }
      }, {
        name: 'Loss',
        data: @data2,
        color: "b2eab2"
      }]

Also is there any option to format yAxis number to 10K or 1M ?

Thanks