Adjusting the color of pie charts can enhance visual appeal and make data more interpretable. In data visualization, color is a crucial element that can help highlight key insights. To adjust the color of a pie chart, you can use various software tools like Excel, Tableau, or Python libraries such as Matplotlib and Seaborn. It's important to choose colors that are distinguishable and do not cause color blindness. Additionally, color schemes can be tailored to match a brand's palette or to emphasize certain segments of the data.