Changing from all answers green to one answer green

Hi. I did a quiz. But when question is answered corectly , it change color to light green at all answers. And i want to change only in that answer, which is true. Any solutions?

function ukazVysledky()
{
	const answerContainers = quizContainer.querySelectorAll('.odpovedi')

	let pocetSpravnychOdpovedi = 0;

		otazky.forEach((momentalniOtazka, cisloOtazky) => {
			const answerContainer = answerContainers[cisloOtazky];
			const selektor = `input[name=otazka${cisloOtazky}]:checked`;
			const odpovedUzivatele = (answerContainer.querySelector(selektor) || {}).value;

			if (odpovedUzivatele == momentalniOtazka.spravnaOdpoved) {
				pocetSpravnychOdpovedi++;
				answerContainers[cisloOtazky].style.color = "lightgreen";
			}
			else{
				answerContainers[cisloOtazky].style.color = "red";
			}

This is how I did it for my trivia game

/* Highlight correct or wrong answers */
const highlightFCN = (userAnswer, correct) => {
    const highlights = d.querySelectorAll('.answerButton');
    highlights.forEach(answer => {

        /*
         * Highlight Answers Function
         */

        /*
         * User answered correctly
         */
        if (userAnswer === correct && userAnswer === parseInt(answer.getAttribute('data-correct'))) {
            answer.style["background-color"] = myGreen;
        }

        /*
         * User ansered incorrectly
         */
        if (userAnswer !== correct && userAnswer === parseInt(answer.getAttribute('data-correct'))) {
            answer.style['background-color'] = myRed;
        }
        if (userAnswer !== correct && correct === parseInt(answer.getAttribute('data-correct'))) {
            answer.style['background-color'] = myGreen;
        }

        /*
         * User let timer run out
         */
        if (userAnswer === 5) {
            answer.style['background-color'] = myRed;
        }
    });
};

I put the highlight in a function, but you can see it in action here (and view the source) -> Trivia Game or my Github Repository