Was that about this stamp or the other?
For assumptions and speculations about varieties, I'm speaking of the other stamps in the other post and earlier posts also. France has been thoroughly studied for years and years and it would be nearly impossible if you had some major variety not in the catalog.
Still, in this case, you are apparently again confusing yourself by ignoring the clear information which is being given to you by Maury. If
the question is the exact color, be aware there were many printings in many shades. Catalogs only list the most obvious/most significant shades and best match is all that can be done without having dated plate number positions (milliséme). Further, used stamps are often not the best for examples of shades.