As Tonibun says, rabbits need a defined day / night cycle - adding permanently 'on' lights would disrupt their natural cycles.
The rabbits would probably be able to reach up to them and chew them - I don't think they are suitable for a hutch. If it was to light up a corner of a shed or wendy house - maybe, but only for when you are in there.
They are also battery operated - and batteries don't work that well in the cold. You may be better putting a solar powered light outside the hutch to provide some ambient light for a few hours - a bit like moonlight, rather than something you can read by - if there is no other light source around. Don't point it into the hutch, though. That way, the rabbits are not in the literal spotlight, and you can keep an eye on them.