@lidorsystems/integralui-web/bin/integralui/themes/midnight/integralui.datepicker.midnight.css

IntegralUI Web - Advanced UI Components for Angular

.iui-datepicker
{
    background-color: #252526;
    border-color: #151515;
    color: #cccccc;
}
.iui-datepicker-header-button-down span
{
    background-image: url(../../icons/down-white-24.png);
}