1. Black and cyan are not necessarily better than black and gray, that is to say, they are not necessarily better than black and white painting.

Generally put together, the color is more beautiful, red and yellow, warm and bright, and more passionate. Yellow and green match, fresh and comfortable, giving people a cool feeling. The combination of pink and blue has a dreamy feeling and is mysterious.

2. After the color in 2.PS turns gray, it is difficult to return to the original color, and many places are too dull and monotonous. It is best not to adjust by removing the color (gray). If you want to see the effect, you can adjust the color between them.