如何在Dash应用程序内的Plotly图形对象中单击时更新标记的颜色？

import dash
import dash_core_components as dcc
import dash_html_components as html
from dash.dependencies import Input, Output, State

app = dash.Dash(__name__)

app.layout = html.Div([
    dcc.Graph(
        id='graph',
        figure={
            'data': [
                {'x': [1, 2, 3], 'y': [4, 1, 2], 'type': 'scatter', 'mode': 'markers'}
            ],
            'layout': {
                'clickmode': 'event+select'
            }
        }
    )
])

@app.callback(
    Output('graph', 'figure'),
    Input('graph', 'clickData'),
    State('graph', 'figure')
)
def update_marker_color(clickData, figure):
    if clickData:
        # 获取单击事件的相关信息
        point_index = clickData['points'][0]['pointIndex']
        
        # 更新标记的颜色属性
        figure['data'][0]['marker']['color'][point_index] = 'red'
    
    return figure

if __name__ == '__main__':
    app.run_server(debug=True)