I found when natural light mixed with artificial light, I would get headaches sooner. I first tried swapping to fluorescent bulbs with a cooler white tone, but even that wasn't enough.
I prefer cooler tones (blues, cool white, purples, greens) over warm colours (yellow, orange, red, warm white) and I know that is backward from most peoples preferences.
What I like about Hue is that I can always adjust my colour temperature, brightness, and even set them on schedules. I have an all-green scene come on at 11pm so if I'm still working that's my cue to stop. I turn my lights on in the morning before I wake up to help rouse me. I have my lights automatically shut off (if not already) at 9am and 12am so if I leave in the morning or fall asleep with my lights on, they will shut off automatically.
I have slowly been expanding my collection and I'm up to 6 bulbs now and it's been such a relief I'm planning to buy maybe 3-5 more over the next year to add to my collection.
I can't make use of that flux app because I'm a designer and need colour control, but if your job doesn't require accurate colours that can also make a WORLD of difference to eye strain and quality of sleep once the sun has gone down.
Best of luck on your path to clear and illuminated work and hobbies, and let us here in the thread know what you decide to try out! I'm always looking for better ways to help mitigate headaches :)
[1] http://www.amazon.com/Super-Bright-Laptop-Light-Black/dp/B00...
The Philips Hue system seems neat, but not $100-$200 neat.