Hi there Winston,The OM images of this p...

Hi there Winston,
The OM images of this particular substrate in Image 73 are noted as rotation 13411, witj a red, a blue and a green LED exposure. When checked on the linked table 13411 correlates to wheel designation OM 57 - sure enough a Strong Magnet. Not sure what your rotation 12942 at reply 77 designates, I can't find reference to it.
I like the fact that they preovide their baseline weighting for colour of 0.8 (red), 0.9 (green), and 1.0 (blue). But I also note their caveat on LED use in that this type of coloring can lead to artifacts when a particular LED reflects off a shiny surface, giving the false impression of a pure red, green, or blue feature.