#wpadminbar #wp-admin-bar-preset .ab-icon:before {
    content: "\f100";
    top: 4px;
}

#wpadminbar #wp-admin-bar-_gsf_dev .ab-icon:before {
    content: "\f107";
    top: 4px;
}

#wpadminbar #wp-admin-bar-gsf-parent-welcome .ab-icon:before {
    content: "\f339";
    top: 4px;
}