<div id="target" style="width: 100%; height: 100px; text-align: center; font-size: 50px;">
<div class="b" style="position: relative; top:0px; left:0px; width: 40%; height:60px;"></div>
<div class="b" style="position: relative; top:10px; left:33%; width: 40%; height:60px;"></div>
<div class="b" style="position: relative; top:20px; left:67%; width: 40%; height:60px;"></div>
</div>
</div>
</div>
<script src="../../../dist/colorgen.js"></script>
<script>
let tar = document.getElementById("target");
function go(){
let colors = [colorgen.randomRGB(), colorgen.randomRGB(), colorgen.randomRGB()];
let alpha = Math.random();
let blocks = tar.getElementsByClassName("b");
for (let i = 0; i < blocks.length; i++) {
let cssColor = colorgen.toCSSString(colors[i], i === 2 ? alpha : undefined);
blocks[i].style.backgroundColor = cssColor;
}
}
go();
tar.onclick = go;
</script>