The color of the chapter can be adjusted to your favorite color through hue saturation, or you can create a new layer by selecting the color range under the menu and fill in your favorite color.
The pixels are not high, that's all. I don't know if I haven't seen the original appearance of your work, nor do I know your specific requirements.
1, dimming
Step 2 adjust the contrast
3. If there are stains, wipe them off.
These are the three basic points.
1, adjust brightness and contrast.
2. Adjust the hue saturation
3. Adjust the brightness again to adjust the contrast and hue saturation.