Hi @Yashwant Pirta ,
It is now possible to change the colors of pie charts on Jira Dashboards using our app Custom Charts for Jira.
There are multiple chart types to choose from and other customizations available including ordering and colors.
You can check it out right now on our free interactive app playground.
There's also Custom Jira Charts for Confluence which has identical features for creating professional charts in Confluence.
I hope that helps with your query.
Tom - Custom Charts Product Manager
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