Function colorPass

Turns image into b&w where only one color left, using HSV selective scale

SuperImage colorPass (
  SuperImage img,
  SuperImage outp,
  float hue,
  float hueToleranceMin = -20.0F,
  float hueToleranceMax = 20.0F,
  float satThres = 0.2F,
  float valThres = 0.3F
);

SuperImage colorPass (
  SuperImage img,
  float hue,
  float hueToleranceMin = -20.0F,
  float hueToleranceMax = 20.0F,
  float satThres = 0.2F,
  float valThres = 0.3F
);