1. First open the PS software, then click File-Open, and select the picture you want to color.

Then click Image-Adjustments, there are many commands that can be used to adjust colors.

2. If you feel that clicking is too slow, you can use shortcut keys. Memorizing a few commonly used coloring shortcut keys is enough.

Color levels: ctrl+L.

2. There are few color balance functions, but the operation is intuitive and convenient.

Color balance: ctrl+B.

3. If you want to have some magical effects, you can achieve it by adjusting the hue and saturation.

Hue/Saturation: ctrl+u.

4. The dark tones, mid-tones and highlights of the image can all be expressed through this curve segment. The contrast of the entire or individual channels can be adjusted, and the brightness and color of any part can be adjusted.

Curve ctrl+M.