How can I change the color of my own emails so that they stand out from emails received from other people during discussions?
Apart from using eM Client tags as @Tony_W suggested above in your specific emails, you can change the colour of the foreground text and background colour behind the email subjects in the Theme Editor for all accounts as per @Gary post below in the following thread.
https://forum.emclient.com/t/color-for-new-emails/95115/3
However I don’t think you can currently change the subject text colour or background colour just for specific email account addresses or senders. If there is a way, someone will update this thread.
You might possibly be able to do that in a eg: “Custom rule” via “Menu / Rules” for when specific senders like your own email address to automatically then apply those subject colours.
I see though, there is a current Sleekplan suggestion for different colours for each email account you can vote for below which should then suit you for specific email accounts such as your own email address “if it carn’t be currently done in a custom rule”. Looks like users also want that also for the mobile apps too.