Userchrome Script könnte mir einer sagen was das macht?

/**
 * PURPOSE: color task tree and unifinder tree based on certain properties
 *   You must use different tree pseudoclasses for different attributes.
 *   Try the following if your attribute is not working:
 *     -moz-tree-cell-text
 *     -moz-tree-cell
 *     -moz-tree-row
 *   Note that all properties are lowercase and any non-alphanumerical
 *   character is escaped by using the special string -ux27- where 27 is the
 *   charaitcter code. See calUtils.js, function formatStringForCSSRule().
 */
.calendar-task-tree > treechildren::-moz-tree-cell-text(calendar-home_calendar),
#unifinder-search-results-tree > treechildren::-moz-tree-cell-text(calendar-home_calendar) {
    /* Color all items from the calendar called "Home Calendar" */
    color: #0090FF !important;
}
.calendar-task-tree > treechildren::-moz-tree-cell-text(alarm),
#unifinder-search-results-tree > treechildren::-moz-tree-cell-text(alarm) {
    /* Color all items that have an alarm */
    color: red !important;
}
.calendar-task-tree > treechildren::-moz-tree-cell-text(status-in-process),
#unifinder-search-results-tree > treechildren::-moz-tree-cell-text(status-confirmed) {
    /* Color all events that are confirmed and all tasks that are in process */
    color: #AA0000 !important;
}
.calendar-task-tree > treechildren::-moz-tree-cell-text(category-birthday),
#unifinder-search-results-tree > treechildren::-moz-tree-cell-text(category-birthday) {
    /* Color all items that are in the birthday category */
    color: #00AA00 !important;
}




/**
 * PURPOSE: color event boxes based on certain properties
 *  To control the looks of the event boxes, you can use the following
 *  selectors:
 *    .calendar-event-box-container
 *    .calendar-item
 *    calendar-event-box
 *    calendar-month-day-box-item
 *  If the box doesn't look like you want it to, try different selectors, maybe
 *  also incombination. Note again that certain fields are escaped (i.e
 *  category) with the same function as noted above.
 */




calendar-event-box[readonly],
calendar-month-day-box-item[readonly] {
    /* Make events from readonly calendars half-transparent */
    opacity: 0.5;
}
.calendar-event-box-container[alarm] {
    /* Color all events that have an alarm */
    background-color: #00DD00 !important;
}
.calendar-event-box-container[categories~="birthday"] {
    /* Color all items that are in the Birthday category */
    background-color: blue !important;




}
.calendar-event-box-container[priority="high"] {
    /* Color all high priority items */
    background-color: #DD0000 !important;
}
.calendar-event-box-container[progress="overdue"] {
    /* Color all overdue tasks */
    background-color: red !important;
}
.calendar-event-box-container[status="in-process"] {
    /* Color all tasks that are in progress */
    background-color: #0090FF !important;
}
.calendar-event-box-container[calendar="home calendar"] {
    /* Color all items in the "Home Calendar" calendar */
    background-color: yellow !important;
}
.calendar-event-box-container[allday] {
    /* Color allday items specifically */
    background-color: #0000DD !important;
}

.calendar-month-day-box-date-label {
    color: red !important;
}
.calendar-event-box-container
.calendar-item
calendar-event-box
calendar-month-day-box-item
.calendar-event-box-container[calendar="privat"] {
    background-color: yellow !important;
}
.calendar-event-box-container[categories~="anrufe"] {
    background-color: red !important;
}
.calendar-event-box-container[status="needs-action"] {
    color: red !important;
}
.calendar-event-box-container[status="in-process"] {
    color: red !important;
}
.calendar-event-box-container[status="cancelled"] {
    color: red !important;
}
.calendar-event-box-container[priority="low"] {
    background-color: red !important;
}
.calendar-event-box-container[priority="high"] {
    background-color: red !important;
}
.calendar-event-box-container[alarm] {
    background-color: yellow !important;
}
.calendar-event-box-container[readonly] {
    background-color: yellow !important;
}
.calendar-event-box-container[progress="overdue"] {
    background-color: red !important;
}
.calendar-task-tree > treechildren::-moz-tree-cell-text(calendar-geburtstage) {
    color: red !important;
}
.calendar-task-tree > treechildren::-moz-tree-cell-text(anrufe) {
    color: red !important;
}
.calendar-task-tree > treechildren::-moz-tree-cell-text(alarm) {
    color: red !important;
}
.calendar-task-tree > treechildren::-moz-tree-cell-text(status-needs-action) {
    color: red !important;
}
.calendar-task-tree > treechildren::-moz-tree-cell-text(status-in-process) {
    color: red !important;
}
.calendar-task-tree > treechildren::-moz-tree-cell-text(status-completed) {
    color: red !important;
}
.calendar-task-tree > treechildren::-moz-tree-cell-text(status-cancelled) {
    color: red !important;
}
.calendar-task-tree > treechildren::-moz-tree-cell-text(calendar-geburtstage, anrufe, alarm) {
    color: red !important;
}