The color blue on mood rings is mostly associated with feeling relaxed and calm, and Lewis says that that is “definitely ...

Often when an artist uses colour in a painting they are trying to communicate an emotion, mood or atmosphere ... Let's take the colour red as an example. The colour red has many different meanings.

Blue light is typically easily scattered by the Earth’s atmosphere. Red light, on the other hand, is scattered less by the atmosphere, allowing some of it to pass through and reach the moon ...