Select Style
colormap: [
  '#000FFF',
  '#68E8FB',
  '#00FF00',
  '#FFF000',
  '#FF0000',
]
colormap: function(x) {
  return {r: 255*x, g: 0, b: 0, a: (1+x)/2};
}
colormap: {
  hue: {
    start: 360,
    end: -360,
    saturation: 50,
    brightness: 100,
    colorStops: 8,
  }
}
colormap: [
  '#000000',
  '#6A0DAD',
  '#FFFFFF',
]