Virtual Blue ga-2100vb-1a with straps from the blue/black ga2100-2a ...I originally tried it with the Blue bezel as well (the last pic), but think the contrast looks better with the virtual bezel. :
Casio G-Shock GA-2100VB-1AER Virtual Blue | Helveti.eu
Custom Made MODS Watch GA2100SKE-7A Clear Ice Blue Jelly Fish Rainbow Colorful | eBay
The new G-Shock GA-B2100 Adds Serious Functionality To The CasiOak Design