如何更改fullcalendar单元格颜色？

我正在尝试更改AngularUI的日历单元格颜色.

但总是只改变事件颜色.

如何改变日间细胞的颜色？

这是我设置事件的Angular代码:

$scope.events = [
    {className: 'fa fa-shopping-basket', title: 'dashboard', start: new Date(y, m, 1), url: 'http://localhost/view_finance', backgroundColor: '#80d4ff', borderColor: '#80d4ff', textColor: '#0088cc', allDay: true},
    {className: 'fa fa-line-chart', title: 'dashboard 2', start: new Date(y, m, 1), url: 'http://localhost/view_finance/d/dash2', backgroundColor: '#80d4ff', borderColor: '#80d4ff', textColor: '#0088cc', allDay: true},
    {className: 'fa fa-user', title: 'balance', start: new Date(y, m, 1), url: 'http://localhost/view_finance/d/balance', backgroundColor: '#80d4ff', borderColor: '#80d4ff', textColor: '#0088cc', allDay: true},
    {className: 'fa fa-bar-chart', title: 'invoice', start: new Date(y, m, 5), url: 'http://localhost/view_finance/invoice/invoice#!/invoice_view', backgroundColor: '#80d4ff', borderColor: '#80d4ff', textColor: '#0088cc', allDay: true},
    {className: 'fa fa-bar-chart', title: 'documents', start: new Date(y, m, d - 3, 16, 0), url: 'http://localhost/view_finance/files/browse/home', backgroundColor: '#80d4ff', borderColor: '#80d4ff', textColor: '#0088cc', allDay: true},
    {title: 'control side', start: new Date(y, m, d + 4, 16, 0), url: 'http://localhost/view_finance/manage/dashboard', backgroundColor: '#80d4ff', borderColor: '#80d4ff', textColor: '#0088cc', allDay: true},
    {title: 'balance', start: new Date(y, m, d + 1, 19, 0), end: new Date(y, m, d + 1, 22, 30), url: 'http://localhost/view_finance/d/balance', backgroundColor: '#80d4ff', borderColor: '#80d4ff', textColor: '#0088cc', allDay: true},
    {title: 'invoice settings', start: new Date(y, m, 28), end: new Date(y, m, 29), url: 'http://localhost/view_finance/invoice/invoice#!/invoice_setting', backgroundColor: '#80d4ff', borderColor: '#80d4ff', textColor: '#0088cc', allDay: true}
];

这是我目前的观点