I have been looking closely on a blue and grey dial closely and did a physical comparison in an AD.
My observation:
Thee grey dial is definitely an exciting option, looks very fresh, clean and striking. Looks great on a strap and tend to agree can look wash out on bracelet. I can see the blue wording and logo can be "invisible" under certain lightning which can be seems a sterile dial from a distance.
The blue dial looks great, a good balance in terms of reading legibility among the 3 dials variation. Looks great on bracelet but can be too much of the blue with a blue rubber strap. Also find the blue quite similar to the Rolex Smurf color in the correct lighting.
Lastly, I find the black or the blue dial can look busy if the skeleton hands when aligned at 12.00 or 6.30 (maybe not too much on the grey dial, owners can comment maybe?)