如何使用Python PPTX设置甜甜圈切片的颜色？

from pptx import Presentation
from pptx.enum.chart import XL_CHART_TYPE

ppt = Presentation('your_presentation.pptx')
slide = ppt.slides[0]  # 选择第一张幻灯片
chart = slide.shapes[0].chart  # 假设图表是第一个形状

if chart.chart_type == XL_CHART_TYPE.DOUGHNUT:
    doughnut_chart = chart
else:
    raise ValueError("The selected chart is not a doughnut chart.")

slice_colors = ['FF0000', '00FF00', '0000FF']  # 切片颜色列表，可以根据需要自定义
for i, point in enumerate(doughnut_chart.plots[0].points):
    point.format.fill.solid()
    point.format.fill.fore_color.rgb = RGBColor.from_string(slice_colors[i])

ppt.save('modified_presentation.pptx')