Hiking headband w/ optional photo gels taped over the top. Why? Because a) it's mostly an ergonomic issue & the skull is great at being stable and supportive of

Hiking headband w/ optional photo gels taped over the top. Why? Because a) it's mostly an ergonomic issue & the skull is great at being stable and supportive of a tiny lamp while reading (the $1 headlamps work remarkably well), and b) photo gels will do most of what you need color-wise if you get something like a sample pack. Just IMO. Oh and it's a light with a strap on it, so it can do all kinds of useful things. By default it will shine wherever you look, so it assists all of your vision in the dark. But if you don't want it to do that it can go around your neck, or hang from a caribiner in a tent, or whatever.