background-blend-mode

/* 1 値 */
background-blend-mode: normal;

/* 2 値、背景ごとにひとつずつ */
background-blend-mode: darken, luminosity;

/* グローバル値 */
background-blend-mode: initial;
background-blend-mode: inherit;
background-blend-mode: unset;

<div id="div"></div>
<select id="select">
    <option>normal</option>
    <option>multiply</option>
    <option selected>screen</option>
    <option>overlay</option>
    <option>darken</option>
    <option>lighten</option>
    <option>color-dodge</option>
    <option>color-burn</option>
    <option>hard-light</option>
    <option>soft-light</option>
    <option>difference</option>
    <option>exclusion</option>
    <option>hue</option>
    <option>saturation</option>
    <option>color</option>
    <option>luminosity</option>
</select>

#div {
    width: 300px;
    height: 300px;
    background: url('https://mdn.mozillademos.org/files/8543/br.png'),url('https://mdn.mozillademos.org/files/8545/tr.png');
    background-blend-mode: screen;
}

document.getElementById("select").onchange = function(event) {
    document.getElementById("div").style.backgroundBlendMode = document.getElementById("select").selectedOptions[0].innerHTML;
}
console.log(document.getElementById('div'));