When Carter and Zhang Ziyi are fighting, Carter is wearing alligator skin shoes (brown). However, when Ziyi thrusts the sword at Carter and Carter falls back on a chair raising his feet, you see him wearing black running shoes with a white sole.
Notice in the scene where Carter and Zhang Ziyi are fighting. Zhang tries to stab Carter, but he blocks it with a roulette wheel. She stabs the Green 00. Lucky, eh?