Can these be programmed to change colors automatically like Scenes in Phillips Hue?

You can find the scene button on device control panel, you can use the preset scenes provided and you can also create your own custom scenes. 

If you want to use Alexa or Google home control the scene, you can create an Automation by click the button on the left upper corner. Then you can try it in voice command:

Alexa, turn on Party ( scene name)