# Green CSS Theme (Open-Source JavaScript Monthly Event Calendar) | DayPilot Lite for JavaScript Demo

> Note: You can create a theme using the online DayPilot Theme Designer: [https://themes.daypilot.org/](https://themes.daypilot.org/)

## Links

- Canonical HTML: /demo/lite/month/themegreen.html
- Source HTML folder: /demo/lite/month/
- Catalog root: /demo/lite/
- Catalog: /demo/lite/llms.txt

## Source

### Inline demo script 1

```javascript
var dp = new DayPilot.Month("dp");

    // behavior and appearance
    dp.theme = "month_green";

    // view
    dp.startDate = "2026-03-01";

    // generate and load events
    for (var i = 0; i < 10; i++) {
        var duration = Math.floor(Math.random() * 1.2);
        var start = Math.floor(Math.random() * 6) - 3; // -3 to 3

        var e = new DayPilot.Event({
            start: new DayPilot.Date("2026-03-04T00:00:00").addDays(start),
            end: new DayPilot.Date("2026-03-04T12:00:00").addDays(start).addDays(duration),
            id: DayPilot.guid(),
            text: "Event " + i
        });
        dp.events.add(e);
    }

    // event creating
    dp.onTimeRangeSelected = function (args) {
        var name = prompt("New event name:", "Event");
        dp.clearSelection();
        if (!name) return;
        var e = new DayPilot.Event({
            start: args.start,
            end: args.end,
            id: DayPilot.guid(),
            text: name
        });
        dp.events.add(e);
    };

    dp.onEventClicked = function(args) {
        alert("clicked: " + args.e.id());
    };

    dp.onBeforeEventRender = args => {
        args.data.areas = [
            {
                right: 2,
                top: 2,
                width: 20,
                height: 20,
                padding: 2,
                symbol: "../icons/daypilot.svg#x-2",
                onClick: args => {
                    dp.events.remove(args.source);
                }
            }
        ]
    };

    dp.init();
```