Breaking Bad use of color

I seen references to the use of color to symbolize different aspects of BB. I was wondering what you folks knew as you are always in the know. But thought I would explore

Yellow is used to symbolize something bad is happening.

A composite of descriptions

Another created a graph of the color changes associated with different characters Thoug the seasons

And this

All compelling insights to the shows use of color

There are 10 kinds of people.
Those that understand binary and those that don't.