Surfing Counches and Seeing Residential Lighting

I've been involved with this international group of people belonging to the Couch Surfer Project and it's been really cool! I've met people from all over the world and slept on many different couches... and one thing I've noticed is the distinct changes in residential lighting from one place to the next. some places are dim, some are bright... some people use lamps, others, overheads... it's really interesting what residential lighting can do to change the mood of the room depending on the brightness, the shade style and color. I think it's really cool... especially since I'm into flashless digital photography... playing on the light of the room is the best way to go!