Well I didn't have to read it though I did. The color boards don't refine the cold settings. If though there was enough change it would ask if a "new coil"
I'm very sure.
Let me give an example. You put a new coil in your atty and mount it on a non color board, resistance reads 0.52 ohm, later after it sits awhile resistance reads 0.48 ohm. On a color board it would stay at 0.52 ohm till user had it read again or it asked if new or old coil, ect.