You gotta find the Adidas Roms from 2001. Paint the middle stripe light blue, throw in yellow laces and you're good to go. If you're feeling extra crafty/insane you paint Zissou on in gold... or use dry transfer railroad letters with clearcoat. The latter method is the best, but probably the least durable. I've already completely worn out my first pair, and have a less accurate but more comfortable custom pair I made from different roms based on an vintage pattern. I've got one more set to make, from screen accurate roms.
I made a costume for halloween one year, and found the exact holster they use for their Glocks. I've got some photos around here somehwere, but you will have to wait until tomorrow to see it all.