app/assets/javascripts/your_platform/demo_mode.js.coffee
$(document).ready ->
if $('.user .box_title').text().includes("Mustermann")
$('body').addClass('mustermann')
$('a:contains("Mustermann")').addClass('mustermann')
$('.term_report_members tr:contains("Mustermann")').each ->
$(this).find('td').addClass('mustermann')
$(this).next('tr.second_for_member').find('td').addClass('mustermann')