JSFiddle - React, Tailwind, and code Playground

HTML

<input id="date-picker" type="text" />

CSS

.ui-datepicker-today a.ui-state-highlight {
    border-color: #d3d3d3;
    background: #e6e6e6 url(/themeroller/images/ui-bg_glass_75_e6e6e6_1x400.png) 50% 50% repeat-x;;
    color: #555555;    
}
.ui-datepicker-today.ui-datepicker-current-day a.ui-state-highlight {
    border-color: #aaaaaa;
    background: #ffffff url(images/ui-bg_glass_65_ffffff_1x400.png) 50% 50% repeat-x;
    color: #212121;
}
.ui-datepicker td.ui-datepicker-days-cell-over a {
    background: #7ca600;
}

JavaScript

$("#date-picker").datepicker();
$("#date-picker").datepicker("option", "defaultDate", +2);