I have found that you’ll need more lamps than at first seems required. Here are some of mine:

The two large ones are LED “work lights” with clamps from photo reflectors mounted on them. They also have some tape closing off the area that would glare into my eyes. The small LED clip-on lamps are just a few of those I have. Obviously I use the former for the picture and the latter for palette, etc., etc. One of those LED lamps that strap onto your forehead is very handy also.
I have no idea what the specs are for these. They came from local shops that I happened to see them in.
Have fun, Dave

one other event, Port Washington/Cedarburg Plein Air, and shows my set up. The tripod stand, and the light it throws…

Cool…nice to see what is out there. I have an overhead LED strip that has Velcro wraps I bought for my ice fishing sled. An Eskimo shelter that pulls over once you sit on the sled seat and becomes an instant tented shelter. All black in side to see the fish hole well, but need good light for taking fish off hooks, changing baits, etc. Was thinking something like this would be good, but the Coleman has a set of LEDs in it.

Guess if I was to add anything more, I might just duplicate my set up for both sides of the paintbox.

Always good to have options.

I’m a fan of the Petzl headlamps.
I have several different lights, including the double-headed Mighty-brite, which I found very blue in colour, but tamed with a thin orange wash on the lenses.
Painting nocturnes brings a plein air painter up against the crucial point of plein air, IMO- the line between what the eyes can see, and what we ‘know’ is there.

Haha, opposite experience here, Michael. After painting with a blue-ish lamp, I brought the picture indoors, only to find it very orange in over-all hue. I was over-compensating for the blue light by warming every mix with oranges and umber.
I agree that info is lacking on the properties of these lamps, but they’re relatively inexpensive to try. I still use the blue-ish MB, but more as general lighting of the palette and easel, using the very-white Petzl lamp to make colour decisions.

I’ve been looking for something to try for some time as well. The music lights seem to be the best option for price and weight. I have seen a couple that are supposed to have good color, but $$$$. Edge Pro sells a clip on one for about $150. About the only information they give on it is the temperature. Revelite looks to be really nice, but they start at $325. It is spec’d out though with a good CRI and R9 value. With both of these, the battery pack is going to add a bit to weight and bulk you are lugging around.