title: iOS - Smooth Color Change Transition/Animation
body: <p>I want to have a smooth color transition that goes across the entire spectrum (i.e. red, blue, green, yellow, orange, etc.)</p>
  
  <p>Also want to be able to have smooth transitions of colors in specific spectrum (i.e. all reds).</p>
  
  <p>Are there any simple algorithms/recursive functions/formulas that can help simplify this process?</p>