Do you know light therapy?

Light therapy is based on the differential effects of different wavelengths

Color Wavelength
violet 380–450 nm
blue 450–495 nm
green 495–570 nm
yellow 570–590 nm
orange 590–620 nm
red 620–750 nm

https://www.sciencedirect.com/science/article/pii/S1572100019303072?via%3Dihub