If you want more advanced control over your LIFX devices, I wrote a blog post with a few examples of how to leverage Photons Interactor to do some really nifty stuff, including starting/stopping Tile and Beam animations.
Hi. I don't know what you mean with "turn off lights", because you certainly can. If you use the Android app, you can set a delay for an action. The option is not available on iOS (no good reason, we just haven't implemented the UI for it).
We don't have any "conditional actions", but we have Toggle where it makes sense for most actions (turn off light if it's on, turn on light if it's off).