IMO - if you haven't watered in the past 24-36 hours, then they look hungry/thirsty.
EDIT- I see water droplets inside the bottoms of some cups.... you should maybe consider some better form of aeration. (MJ likes for it's roots to 'dry out' a little bit so they can breathe Oxygen.. that means in a small container like those, don't water everyday, water when the top inch or two is dry, just a little FYI. G'luck, so far so good, man.