Lol if I want a cool color I'll paint it. Adding coloring to the machine for a single (or a few) parts is a lot more work than it seems.
When we make parts of that size and complexity we make well over 1000 cases in a single day on a single machine, if we had to stop to make a few green cases and a few red cases and a few blue cases our material technicians and machine technicians would be wasting hours of their expensive time setting up the machine for the different colors. That said, we do it sometimes. I don't know what it costs but we do have the occasional customer wanting multiple colors.
As for moulds, each one is vastly different in weight, and not always related to the size of the part. We have moulds that barely weigh more than 100 lbs, and we have moulds that weigh around 12,000 lbs. The ceiling robot or a forklift (for the lighter ones) are about the only way to move any of them.
Anyway yeah I'd love to do the cases. I'd keep a few spares for myself if I could, or rescue some scratched ones from the scrap bin, but mostly I'd just make sure they're made with good material and on a good, modern machine.
And take lots of pictures!