Who doesn't like to turn their front yard into a Xmas light show miracle. Although not free, with LumenPlay, now you can do so in 16 million colors programmed with your smartphone. See the LumenPlay download and NYT explanatory links, which give other alternatives as well.
LumenPlayDownload Link: http://www.lumenplay.com/
NYT Explanatory Link: http://tinyurl.com/l92q7ul