Replace admin bar logo
That’s controlled by a Dashicon (font icon) and a before statement: #wpadminbar #wp-admin-bar-wp-logo > .ab-item .ab-icon:before { content: ‘\f120′; top: 2px; } What you’d want is to replace the content call. Use a built in Dashicon from here: http://melchoyce.github.io/dashicons/ So the smilie would be content: ‘\f328;`