Solution: 1 When we open the WPS form, we can see that the label color of the worksheet is gray by default. 2. Then select the worksheet whose color we need to change, click the inverted triangle button in the upper left corner of the table interface, and select the "Worksheet" option group of the format tab in the pop-up drop-down menu, which will automatically appear. When we return to our worksheet, we will find that the label of the worksheet we just selected has changed color.