Hey Rushikesh,
you should be able to add a custom HEX/RGB color value to each series that you want displayed in your column chart, as such:
Hope this helps!
Hi Rushikesh Mandage,
You can add your Own color for each bar while forming the data.
You can find this for your reference :
https://plotly.com/javascript/bar-charts/#bar-chart-with-hover-text
You can form a Color array inside the marker property. So for each trace you can add your custom color.