I fully agree with Jerome.
Actually, up to now, the Patek manufacturer doesn't announce anything about on the Lemania movt' though we all said the supply will be cut soon.
Secondly, I also really suspect that people prefer PT>WG>RG>YG in anything. AFAIK, many would prefer RG/YG, particularly under the same model, the collectors need not pay much premium. For example, you are hard to find a 3445RG then a 3445WG.
Just MHO,
Addi