The amount of lighting could set a brighter or darker tone, as could the colors used to portray the mood. Less lighting could mean the play has a more serious topic, where natural lighting could lend a happier theme.
No one is sure which made it at the very start as it is very old and has evolved majorly overtime but the first acoustic guitar that would he recognized as a guitar today was invented by Antonio de Torres Jurado and the first ever electric guitar was invented by George Beauchamp and Adolph Rickenbacker