Colors

Being a painter I am naturally into colors, but I am also an engineer, who loves structure and this combines into different color mandalas.
Here is a simple one showing the three primary colors, the three complementary colors and mixtures of these colors either next to each other or opposed to each other:

I also analyzed a rainbow spectrum cast on a wall by a crystal and came up with the following:

The three primary colors overlap each other and create the secondary colors. So, to see how big a part of the spectrum each primary color occupies we must count not only the color itself but also the color it creates by mixing with the next primary color.
Red and its influence on yellow (=orange) measured 6.
Yellow and its influence on red (=orange) and on blue (=green) measured 14.7.
Blue and its influence on yellow (=green) measured 36.
Now 36 divided by 14.7 equals 14.7 divided by 6, which means that the three primary colors spread out in accordance with the golden mean.

The character of red is penetration, that’s why the sunset is red.
The character of yellow is brightness.
The character of blue is dispersion, that’s why the sky is blue.

Here is another mandala incorporating the white light source and the no-light of infra red and ultra violet:

Finally a mandale of fourteen colors with different meanings associated:

It is strange that mixing red and blue makes violet, which is at the extreme opposite end of the spectrum from red.