User:Roux/monobook.css

.diffchange { border: 1px dotted #f00;         /* Red dotted border. */ }

.usermessage { border: 2px solid #36454F; background: none; -moz-border-radius-topright:20px; -moz-border-radius-bottomleft:20px; font-family: 'Trebuchet MS', sans serif; }