cup wheel colour code

On speaking to several people.... It would seem that OEM colours on wheels done at the factory can be slightly different from day to day as WOODY said they are done in batches... The only way of ensuring an exact colour match on wheels is to have all 4 done.
 
Have two sets of cup wheels. One set originally mounted from factory, second purchased about two years later (second hand, not brand new). All wheels have exactly same colour, cannot recognise any difference. Maybe they are from the same batch, but the chance of this is quite low I think.

Code in first post should be the right one for 197 cup wheels.