Answers for "javascript change color back"

javascript style background color

// change background color for specific id ..
function changebackground(){
	document.getElementById('id').style.backgroundColor = 'green' ; 
}
// change background color for whole body..
function changebackground(){
	document.body.style.backgroundColor = 'green';
}

JavaScript Change Background Color

var element = document.body;
element.style.backgroundColor = "blue";