Regular J/P/R/G
Run out J/P/R/G with the Roman XII. The J version has a champagne dial I believe.
Salmon G
Brown dial J possibly a one off. There was a photo of it recently following a factory tour.
Blue dial P definitely a one off for charity.
That makes 11 versions at least.
Then there is the rumoured Clapton P with Breguet numerals.
I suspect there may be other special versions owned by VIPs but nothing in the public domain that corroborates this.
Rgds
Roger.