How to set underline color in PDF?
1. Use WPS Office to open the PDF, select the content you need to edit.
2. Click Insert → the pulling-down button Underline, and select a desire color.
3. If you need more colors, click Other Colors. In the pop-up dialog box, you can select a standard color or customize one by yourself.
4. In addition, you can also click Color Picker and then click a desired color from any part of the page. In this way, you can underline the text in a picked color.