Using New Outlook on Windows for personal email, calendar, and contact management
Hello dcraw998,
Good day! Thank you for posting to Microsoft Community.
Based on your description, I understand that you have a concern with changing the color scheme for read/unread messages in the New Outlook preview.
According to your description, I really understand that you are referring to difference in the current feature in New Outlook preview and the classic outlook. And based on my research, I got the same result as yours. The black-blue-black is the default pattern in both outlook versions for unread email. Unless you applied conditional formatting for incoming emails in the Outlook view for the classic outlook which is currently not yet feasible in the new version. I'm afraid, I didn't find a way around this in the new outlook. If you heavily rely on this feature, you may consider toggling out of the new Outlook for Windows preview.
Please kindly understand that many functions are not designed at present. I'd suggest creating an entry as a feature suggestion in feedback collection directly through your new outlook (Help-->Feedback) or at Outlook · Community (microsoft.com) and many other users could vote for it. Many features of our current products are designed and upgraded based on customers’ feedback.
I will update here if I get any update on this feature. Thank you for your kind understanding.
Best Regards,
Ashraf.