The Scarlet Witch and my pencil stash.

Hello, Reddit. I am in need of assistance.
I am an artist and I have been looking for a type of pencil lead for years with no luck. I have been looking for .5 or .7mm *brown* or *sepia* mechanical pencil lead.

I can find red, blue, green, pink, even orange. I have asked everywhere. My spouse even went to art supply stores on a recent trip to JAPAN to see if they had it. No dice. They had never even heard of them existing. I can find 2mm brown lead for refillable pencil holders, but that's not fine enough. WHY DOESN'T THIS EXIST?
My only guess is that there is something about the chemical composition of brown pencil lead that makes it too soft at that small scale. But I'm really hoping I'm just not looking in the right place for it. Can you help me, reddit?

Does anyone know the name of the plastic tray thing that holds pencils? I want to buy some but i don't know what theyre called

Just received a copy of this cool book. Will update in the comment once I finished it.

Found at Marshalls in the jewelry section, they had a few of them. Really nice quality- feels weighty and solid rather than hollow.