@Auspice I feel you. I feel you SO HARD.
For black and the other stuff... while everyone SWEARS by the ottlites? I have LED lamps from Lowe's that are STUPID CHEAP by comparison and, bluntly, work 1000000000x better. I dunno if they're dead accurate on color, but I use them for working and now just use the portable ottlite for quick phone pics of things.
This one: https://www.lowes.com/pd/Utilitech-13-25-in-Adjustable-Stainless-Steel-LED-Desk-Lamp-with-Metal-Shade/1000003090 (Also dammit I do not need this: https://www.lowes.com/pd/Hailey-Home-Descartes-29-in-Blackened-Bronze-Led-Rotary-Socket-Table-Lamp-with-Metal-Shade/1000966736 but now I want one so much. So impractical, I do not have the desk space for that, but but but but... sometimes I'm grateful I'm broke.)
Seriously... these things are my salvation, and made working on the black suddenly almost normal vs. trying to work with the ottlite. And you can't beat $20 for a stellar crafting lamp. (They carry the same kind in a clip-on for the same price, too.) We ended up getting one in Florida because I was going crazy without one in the general dim hotel light, and we hadn't realized how much of a difference it made. They seem to go in and out of stock in the different colors for some reason.
Though you need to use more than the usual two strands, considering the cost of metallics... take a peek here: https://www.amazon.com/gp/product/B07PQXY5J7/
I have a major metallics weakness, and know I'll use them a lot, so it ends up being super worth it to get stuff like that rather than single spools or small hanks, unless I need something super specific. Quality on what I've gotten from them thus far is excellent, and I like some of the colors I can't find elsewhere.
I figured out roughly how much I'd need for the final version of this thing, and since I'm committed now... yeeeeeeup, I'mma be dyeing some shit, 'cause there is NO way I'm spending $200+ on basic floss. That is just noooooooooot happening. Plus, finding 6 skeins of 42 colors without running all over the state to every Michaels and AC Moore is just all the frickin' NOPE in the world.