Hypnostates

<!DOCTYPE html>
<meta charset="utf-8">
<style>

path {
  stroke-linejoin: round;
  stroke: #444;
  stroke-width: 1px;
  fill: url(#rainbow);
}

</style>
<body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/topojson/1.6.20/topojson.min.js"></script>
<script src="//d3js.org/d3.v4.0.0-alpha.18.min.js"></script>
<script>
  var rainbow = d3.scaleRainbow(); // lazy
</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.14/d3.min.js"></script>
<script>

var width = 960,
    height = 500;

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);

var gradient = svg.append("defs")
  .append("radialGradient")
    .attr("id","rainbow");

var modded = function(d){
  return rainbow((4 * d) % 1);
};

gradient
    .selectAll("stop")
    .data(d3.range(0,1,0.01))
    .enter()
    .append("stop")
      .attr("offset",function(d){
        return d;
      })
      .attr("stop-color",modded);

d3.json("stateplane.topo.json",function(err,stateplane){

var zones = topojson.feature(stateplane,stateplane.objects.stateplane).features;
      outer = topojson.merge(stateplane,stateplane.objects.stateplane.geometries);

zones.forEach(function(zone){

var fn = d3.geo[zone.properties.type]().rotate(zone.properties.rotate);

if (zone.properties.parallels) {
      fn.parallels(zone.properties.parallels);
    }

zone.properties.path = scaledPath(fn);

});

outer.type = "Polygon";
  outer.coordinates = [outer.coordinates[0][0]];

d3.shuffle(zones);

var us = svg.append("path")
    .attr("class","outer")
    .datum(outer)
    .attr("d",zones[0].properties.path)
    .each(morph);

d3.selectAll("stop")
    .each(cycle);

function morph() {

var current = zones[0],
        next = zones.pop();

zones.unshift(next);

d3.select(this).transition()
      .ease("linear")
      .duration(1250)
      .attr("d",next.properties.path)
      .each("end",morph);

}

function scaledPath(projection) {

var p = d3.geo.path().projection(projection);

// Auto-scale a la https://bl.ocks.org/mbostock/4707858

projection
      .scale(1)
      .translate([0, 0]);

var b = p.bounds(outer),
        s = .95 / Math.max((b[1][0] - b[0][0]) / width, (b[1][1] - b[0][1]) / height),
        t = [(width - s * (b[1][0] + b[0][0])) / 2, (height - s * (b[1][1] + b[0][1])) / 2];

projection
      .scale(s)
      .translate(t);

return p;

}

});

function cycle(d) {

d3.select(this).transition()
    .duration(2000)
    .ease("linear")
    .attrTween("stop-color",function(d){

return function(t) {
        return modded((d + t) % 1);
      };

})
    .each("end",cycle);

}

</script>

https://cdnjs.cloudflare.com/ajax/libs/topojson/1.6.20/topojson.min.js

https://d3js.org/d3.v4.0.0-alpha.18.min.js

https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.14/d3.min.js