1. Open word document and insert the desired image.
2. Double click the picture Select the format, click the drop-down button , and change the overall appearance of the image.
3. In the image style template, select the style you like
4. The overall appearance of the picture after selecting the style is shown in the figure.
5. Click the picture border, select the appropriate color, and change the color of the picture border.
6.The effect of changing the color of picture border as below.