cooler method

void cooler(num amount, { bool relative = true, })

Adjusts the hue of every color in the palette to be cooler by amount, capping the value at 270 degrees.

If relative is true, amount will be treated as a percentage and the hue will be adjusted by the percent of the distance from the current hue to 270 that amount represents. If false, amount will be treated as the number of degrees to adjust the hue by.

Implementation

void cooler(
  num amount, {
  bool relative = true,
}) {
  for (var i = 0; i < length; i++) {
    colors[i] = colors[i].cooler(amount, relative: relative) as O;
  }
}