4 black watches, 4 different materials
PAM195=44 mm luminor PVD
PAM360=44 mm luminor DLC
PAM292=45 mm radiomir Ceramic
PAM339=47 mm radiomir Composite
(I know the 339 is not 100% black but a bit brown, on the other side, when you wear it and ask somebody which color it is, 95% will answer black
Only if you put it next to a black watch you'll notice a difference)
Conclusion
All for of them look black but after a close look
The composite is indeed a bit brown.
The 292 ceramic is by far most black, pitch black
the coated luminors are black but they have a grey shine
The 195 PVD is a bit more matte than the DLC 360