I know they exist, and the good ones that specifically work on reducing the blue are something like $30/ea. I'm unclear as to how they dim - some LEDs just turn into this dim, grey, nasty light, though.
Meanwhile, dimmed incandescents are even better and cost radically less up front - yes, they use more power, and in the winter the heat emissions are welcome. And we use radically less light, because you don't need that much light at night. A kerosene lantern worth of light is more than enough to read by.
Meanwhile, dimmed incandescents are even better and cost radically less up front - yes, they use more power, and in the winter the heat emissions are welcome. And we use radically less light, because you don't need that much light at night. A kerosene lantern worth of light is more than enough to read by.