After I saw the box of chips, I remembered this.
A couple months ago CSI called and ask that someone go to GGS and get them 4 or 5 racks of fantasy chips. One of the marketing girls went down and bought a big box full of mixed chips and overnighted them to the prop manager at CSI.
They did specify certain colors.

We get a lot of calls from CSI and Las Vegas wanting us to send them certain props. If you saw the Las Vegas segment with the poker game, I overnighted them two poker table layouts for that one. I have sent Palms matches, swizzles, napkins, etc several times.