docs: def colorize(occurence,maxoccurence,minoccurence):
      '''A formula for determining colors.'''
      if occurence == maxoccurence:
          color = (255,0,0)
      elif occurence == minoccurence:
          color = (0,0,255)
      else:
          color = (int((float(occurence)/maxoccurence*255)),0,int(float(minoccurence)/occurence*255))
      return color