Does a color of a room affect the sound?
Definitely can effect video. Just something to keep in mind if you’re considering A/V. In the case of video, there is a particular shade of grey (seriously, no pun or adult reference intended) that is most appropriate. In fact, many folks into serious quality video viewing use what is referred to as "bias" lighting. Grey background is by far the best.
Maybe also makes sense why some people like to listen to music in the dark. It does something to the mind.
There is truth in this. The rationale is that the hearing senses are "heightened" that much more when the visual senses are at bay.