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# Why Does This Work? Refractor Challenge Pt 2

After going through the full refraction process in the challenge, I am left confused only by the last update. Here is the code:

let html = '';
const randomValue = () => Math.floor(Math.random() * 256);

function randomRGB(value) {
const color = `rgb( \${value()}, \${value()}, \${value()} )`;
return color;
}

for ( let i = 1; i <= 100; i++ ) {
html += `<div style="background-color: \${randomRGB(randomValue)}">\${i}</div>`;
}

document.querySelector('main').innerHTML = html;

The part I don't understand is:

function randomRGB(value) {
const color = `rgb( \${value()}, \${value()}, \${value()} )`;
return color;
}

I understand that 'value' is a parameter, but I don't understand where the argument is being passed through it, or specifically, where the value of 'value' is coming from, in the 'color' const.

This felt tricky to explain. If you would like me to clarify please let me know!