Secret Weapon Miniatures have posted photos of the custom trays being produced for them by Battle Foam.
From their announcement:
This incredible bag will hold all 22 Secret Weapon Pigments, all 30 Secret Weapon washes and still has room for tools and a couple of extras. Your brushes can be safely stored in the lid and the foam toppers will keep things from getting damaged.
The bag will be available later this month, empty or full, from both Secret Weapon and Battle Foam.