What does it mean to change six colors in six hexagrams?

Among the sixty-four hexagrams, there are six red hexagrams and six hexagrams. .

The so-called harmony refers to the relationship between the world and the reaction in the hexagrams. .

For example, in "Six Red", zi and noon, ugliness and non-ugliness, yin and Shen, Mao and unitary, Chen and Xu, Si and the sea, etc.

However, in the middle of exchange, the world is uncultured and should be ugly. Don't collide with ugliness. So it's called six red hexagrams. .

Six red hexagrams are not necessarily bad hexagrams, and six hexagrams are not necessarily good hexagrams. It should be explained according to specific requirements.