如何在matplotlib中部分fill_between，如在不同的颜色中使用不同的值

import matplotlib.pyplot as plt
import numpy as np

# 准备数据
x = np.linspace(0, 10, 100)
y1 = np.sin(x)
y2 = np.cos(x)

# 确定分段点
x0 = 3
x1 = 7

# 绘制填充区域
plt.fill_between(x, y1, y2, where=(x >= x0) & (x <= x1), color='blue')
plt.fill_between(x, y1, y2, where=(x > x1), color='red')
plt.fill_between(x, y1, y2, where=(x < x0), color='green')

# 绘制曲线
plt.plot(x, y1, color='black')
plt.plot(x, y2, color='black')

plt.show()