@littlered You may want to try green light therapy for headaches. There has been at least one study on green light and pain. Evidently, you just need to see the green light in your field of vision for pain relief effects.
However, if you have migraines and they are light-sensitive, you should not use bright lights as they could make your migraine worse. I know not all migraine sufferers have migraines triggered by light or sensitive to light, so it’s really down to the individual.