Over the past week, WhatsApp introduced several aesthetic changes for its beta users on Android. In an earlier update, WhatsApp had changed the tint of app's name, as well as 'Reply' and 'Mark as read' to blue in the dark theme. The colour change was revoked after some users complained of poor visibility due to lack of contrast between the blue colour and the dark theme. It remains to be seen if that will come to pass, given that it would not be part of the WhatsApp dark theme now. Recently, in other changes to look and feel of the application on Android, WhatsApp removed line separators between conversations on the chat page.
Source: Mint June 14, 2021 23:37 UTC