var select = document.querySelector('select');
var html = document.querySelector('.output');
select.onchange = function () {
var choice = select.value;
var bgColor;
switch(choice){
case 'white':
bgColor = 'black';break;
case 'black':
bgColor='yellow';break;
case 'purple':
bgColor="red";break;
case 'yellow':
bgColor = 'green';break;
case 'psychedelic':
bgColor =" blue"; break;
}
update(bgColor,choice)
}
function update(bgColor, textColor) {
html.style.backgroundColor = bgColor;
html.style.color = textColor;
}