I have a weakness for white, black or a combination of the both G-Shocks. I just got my newest purchase in the mail today, Haven't had time to play with it though. It's bottom row, 2nd to the right, the new GWX8900B-7.
Yeah, somehow muted colours just seem to suit G-Shocks very well.
I mean OK bright colourful models are fun, but somehow the 'tough' element sits better with mono. (Note: Two out of the three jellies in my sig are now dyed black.)