ColorController: onFinishChange is not called when editing the color text field

[Phil]

The onFinishChange callback does not fire when changing the color by typing in a new value in the text field.

A call to onFinish should be added to onBlur:

function onBlur() {
  const i = interpret(this.value);
  if (i !== false) {
    _this.__color.__state = i;
    _this.setValue(_this.__color.toOriginal());
    // Added onFinish call
    onFinish();
  } else {
    this.value = _this.__color.toString();
  }
}