I want to keep the different colors on my 3 mail boxes - now they are all the same :(
2nd
ranked

You can change the theme for the main mailbox on the desktop by following these steps:
https://help.yahoo.com/kb/sln28146.html
If you still find that the settings aren’t saving, please see this help page for troubleshooting:https://help.yahoo.com/kb/new-mail/fix-problems-mail-sln28075.html?impressions=true
Thank you!
Mail Support