[SFML][C++] Zmiana koloru tekstu po najechaniu kursorem

case Menu:
{
    if( przycisk_start.getGlobalBounds().contains( sf::Mouse::getPosition( window ).x, sf::Mouse::getPosition( window ).y ) )
    {
        if( sf::Mouse::isButtonPressed( sf::Mouse::Left ) )
        {
            start = Game;
        }
    }
    if( sf::Keyboard::isKeyPressed( sf::Keyboard::Enter ) )
    {
        start = Game;
    }
    if( sf::Keyboard::isKeyPressed( sf::Keyboard::Escape ) )
    {
        window.close();
    }
}
break;

#ifndef przycisk_hpp
#define przycisk_hpp

#include <SFML/Graphics.hpp>
#include <SFML/Window.hpp>

class Guzik
    : public sf::Text //public sf::Drawable, public sf::Transformable
{
private:
    sf::Text tekst;
public:
    Guzik( std::string tekst, sf::Color color, sf::Font & font, int charactersize, sf::Vector2i position );
private:
    void draw( sf::RenderTarget & target, sf::RenderStates states ) const;
};
#endif  // przycisk

#include <SFML/Graphics.hpp>
#include <SFML/Window.hpp>
#include "przycisk.hpp"
Guzik::Guzik( std::string tekst, sf::Color color, sf::Font & font, int charactersize, sf::Vector2i position )
{
    this->tekst.setString( tekst );
    this->tekst.setFont( font );
    this->tekst.setColor( color );
    this->tekst.setCharacterSize( charactersize );
    this->tekst.setPosition( position.x, position.y );
}
void Guzik::draw( sf::RenderTarget & target, sf::RenderStates states ) const
{
    states.transform *= getTransform();
    target.draw( tekst, states );
}

sf::Text tekst;