It’s highly likely that the black‑colored microphones are not MSM321A3729H9BP. They are almost certainly the same SPU0414HR5H‑SB microphones used across all four positions, just dressed differently.
The appearance of the black-colored microphones closely resembles that of the MSM321A3729H9BP.
May I ask why you believe they are the SPU0414HR5H‑SB microphones?