Actually, I misspoke.
The latest incarnation of loading bench has brass rod sections sticking up for shell holders.
The shelf is thick enough for caliber, and maker numbering for easier ID.
While shell holders for specific dies stay with the dies, the random/extra shell holders are on the pegs.
Don't need a specific shell holder for universal decapping, bullet pulling, etc so it makes those chores faster.
After a while, I just got too many plastic boxes stacked up to sort through everytime I wanted something.
Dies are in tool heads, so they don't go back into factory boxes, and there are shelves specifically set up for those tool heads/die sets/powder throwers etc.
The brass rod sections, sticking up right next to the tool heads, allow for things like case gauges & other caliber specific tools to say right with the tool head, and be handy, right behind the press the tool heads fit into.
Working with brass (or wood) allows a no scratch surface for my tools.
It's a work bench efficiency thing, everything is within easy reach & organized.
I still like the idea of color coding, and with the correct paint it would stop or reduce some rust issues.
I'm all about reducing issues and speeding up processing!
The reason for rethinking a reloading specific bench build was efficiency & ease of use...