You can download Festive Lights 5.0 for Mac from our software library for free. Our antivirus scan shows that this Mac download is malware free. The application lies within Theming Tools, more precisely Wallpapers.
From the developer:
Decorate your Dashboard. This widget dresses your Mac in elegant animated lights with over a dozen motion patterns including blink, twinkle, chase, and more. Install custom lightsets to suit every season and taste-from Christmas to Hanukkah, St. Patrick's Day to the 4th of July.
You may want to check out more software for Mac, such as Light Blue, Lights Out or Virtual Light Lab, which might be similar to Festive Lights.