Troca de Cor com Scroll

<script>
    document.addEventListener("scroll", function(){
    const containerCor = document.querySelector(".containerCor");
    const scrollAtual = window.scrollY;
    const scrollCor = 300;

    if(scrollAtual >= scrollCor){
        containerCor.style.backgroundColor = "blue"
    }else{
        containerCor.style.backgroundColor = "white"
    }
})
</script>