My guess is red bulbs let the brain get its circadian rhythm going.  The candles interest me. Air quality issue maybe? 

 Or cats. Candles and cats do not mix! 

 Yes. Furry midgets.  

 ...that want to see everything burn  

 Ah! I checked my notifications out of order 🤣 

 Also good for mitochondria. We evolved on a planet around a red giant.