hueman.yml

plugins:
  scene:
    path: 'hueman.plugins.Scene'
    settings:
      sunset:
        orange:
          quantity: 20%
          priority: 80 
          hue: 46789
          sat: 150
        yellows:
          quantity: 60%
          priority: 90
          hue: 23133
          sat: 200
        reds:
          quantity: 10%
          priority: 70
          hue: 0
          sat: 200

scene.py

class Scene(object):
    def __init__(self, **scenes):
        self.scenes = scenes

    def __call__(self, controller, scene):
        try:
            scene = self.scenes[scene]
        except KeyError:
            return
        n_lights = len(controller)
        presets = self._do_priority_magic(n_lights, scene)
        for light, state in zip(controller, presets):
            light.apply(state)

    def _do_priority_magic(n, scene):
        return  # TODO

usage.sh

hueman -g office scene:sunset