.fc-agendaFourDay-view .fc-day:nth-child(3n+1) {
    border-right-width: 2px;
    border-right-color: #aaa;
}
td.fc-wed[data-resource-id='1'],
td.fc-thu[data-resource-id='1'],
td.fc-fri[data-resource-id='1'] { background-color:#f0defd; }
td.fc-mon[data-resource-id='1'],
td.fc-tue[data-resource-id='1'] { background-color:#defde0; }
/*td.fc-fri[data-resource-id='2'] { background-color:#ffe9ee; }*/
td.fc-mon[data-resource-id='2'] { background-color: #fffde9; }