如何在SFML中给线条上色？

#include <SFML/Graphics.hpp>

int main()
{
    sf::RenderWindow window(sf::VideoMode(800, 600), "SFML Line Coloring");

    sf::VertexArray lines(sf::Lines);
    lines.append(sf::Vertex(sf::Vector2f(100, 100), sf::Color::Red));
    lines.append(sf::Vertex(sf::Vector2f(200, 200), sf::Color::Green));
    lines.append(sf::Vertex(sf::Vector2f(300, 100), sf::Color::Blue));

    while (window.isOpen())
    {
        sf::Event event;
        while (window.pollEvent(event))
        {
            if (event.type == sf::Event::Closed)
                window.close();
        }

        window.clear();
        window.draw(lines);
        window.display();
    }

    return 0;
}