Rolex service has always been on the money for me, Omega, on the other hand(pun intended) has not.
I have an acqua terra (2502.80) and when it was serviced, it took a year to get the blue dial back in stock. They actually put a white dial on it to hold me over.
FWIW, i prefer the 2502.80 to the one pictured in the earlier post. The dial is a simple blue, not recessed and tone on tone which, to me, is a little too busy