Epilepsie script

let colors = ['red', 'green', 'blue', 'yellow', 'purple', 'black', 'white', 'orange'];
let counter = 0;

function changeBackgroundColor(){
    document.querySelector('body').style.backgroundColor = colors[counter];
    counter ++;
    if(counter >= colors.length-1)
        counter = 0;
}

setInterval(changeBackgroundColor, 10);