I love bright blue and bright green g shocks, particularly 6900s. I think I got into G shocks too late because all my favorites seem to be impossible to find. I'm thinking of:
6900CB-2 (cb-1,4,8 easily obtainable)
6900CC-2 & CC-3 (cc-1,6 easily obtainable)
6900NB-3 (nb-1,4,7 easily obtainable)
G6900GR-3 (most other G6900s are obtainable)
GLX5600-2 (glx -1,4,7 easily obtainable)
Why do Casio make it so hard to obtain blue and green models, even in comparison to yellow or red.