Fibonnacci Monolith

inspired by geometrydaily's fibonnacci monolith

<!DOCTYPE html>
<html>
    <head>
        <title></title>
        <meta http-equiv='content-type' content='text/html; charset=utf-8' />
        <style>
            body {
                font:normal 12px/20px 'Georgia';
                text-align:center;
                background:url(data:image/png;base64,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) #222;
            }
            a {
                display:block;
                margin-bottom:50px;
            }
            #c {
                -webkit-transform:rotate(180deg);
            }
    </style>
    </head>
    <body>
        <a href='https://geometrydaily.tumblr.com/post/42023402755/367-fibonacci-monolith-geometry-daily-is-back'>inspired by geometrydaily</a>
        <canvas id='c' width='400' height='700'></canvas>
        <script>
            var lim = 50, w, fibs = [],
                c = document.getElementById('c'),
                ctx = c.getContext('2d'),
                s5 = Math.sqrt(5);

// analytic. suck it, computer science
            function fib(x) {
                return Math.round(((1 / s5) * Math.pow(((1 + s5) / 2), x)) -
                    ((1 / s5) * Math.pow(((1 - s5) / 2), x)));
            }

for (var i = 0; i < lim; i++) fibs.push(fib(i));

var max = fibs[lim - 1], x = 0, y = 0;
                colors = [
                    '#100f1f', '#2a445e',
                    '#382d3e', '#7fb6ab'];

for (i = lim - 1; i > 0; i--) {
                ctx.fillStyle = colors[i % colors.length];
                w = ((fibs[i] / max) * 400);
                ctx.fillRect(x, y, w, w);
                if (i % 2 == 0) x += w;
                else y += w;
            }
        </script>
    </body>
</html>