One colorpicker should close automatically when other is opened

[neeraj3029]

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• [x] bug report
• [ ] feature request
• [ ] support request => Please do not submit support requests here, instead ask your query in our Gitter channel

Current behavior: In Settings, two colorpickers open simultaneously, which should not happen Expected behavior: One colorpicker should close auotmatically when other is opened

Steps to reproduce:

System information:

Your operating system MacOS

Would you like to work on the issue? Yes