Re your P.S.: There's a growing body of research[0] showing that the quality (color, etc.) in addition to quantity of light in your environment has profound eff

Re your P.S.: There's a growing body of research[0] showing that the quality (color, etc.) in addition to quantity of light in your environment has profound effects on alertness and sleep. It sounds like you're doing the right thing by keeping light out of your sleeping environment. For the lights you do need, consider their spectrum and color temperature. [0] https://justgetflux.com/research.html https://justgetflux.com/research.html