Colourise a CQ using a mixture of logarithmic and linear scales

colour.py

def colour(cq):
   rating = abs(cq - 100)
   base = math.pow(10, 1./111) # i.e. 0.5 * 1/(255 - 32 - 1)
   LOG = math.log(rating + 1, base) / 2
   LIN = rating * 2.23 / 2 # i.e. 255 - 32 / 100 (/ 2)

   red, green, blue = 32, 32, 32
   if cq > 100:
      blue += int(LOG + LIN)
   elif cq < 100:
      red += int(LOG + LIN)
   return red, green, blue