.calendar_cell_black {
    background-color: black;
}

.calendar_cell_red {
    background-color: red;
}

.calendar_cell_silver {
    background-color: grey;
}

.calendar_cell_green {
    background-color: green;
}

.calendar_cell_gold {
    background-color: gold;
}

.calendar_cell_blue {
    background-color: blue;
}