New emails subject lines should be the same color as the sender's name and not be orange. Make it black.
Please change the color of new emails from orange to black. It's incredibly hard to read, and the two-tone black/orange lettering in the middle of the inbox makes it very hard to focus.
Please make a clear delineation between the subject line and the body of the email. With the new "cleaner" look, it's hard to tell which section I'm on. You even took away the label "subject." Why? I've begun typing what I thought was the body of the email in the subject line several times now. Too confusing. Or at least, if I press enter while on the subject line, have the cursor move to the body. Right now, it does nothing if I'm in the "Invisible" subject line and hit enter.