One of the furfies doing the rounds of the ooky-spooky Tarot readers is that all decks have to be wrapped in black silk.
All of those of my decks that are in silk, are in vivid colours. My one deck wrapped in black, is in a fine wool.
I buy silks (and get given bags) in colours that I like, which are usually bright, jewel-shades of rainbow colours, singly or in combination. I particularly prefer silk squares that have been tie-dyed in two complementary colours (say indigo and purple, or yellow and lime-green).
I tend to avoid orange, because personally I am not all that comfortable with orange. Ditto pink and brown, same reasons, purely a matter of aesthetic taste. However, I'm happy enough with orange as a part of fire-colour combinations, or full rainbow combinations, and brown in combination with other earth-colours, for example. And one deck that I'm really quite fond of is wrapped in an orange-and-black silk, and I'm okay with that. Partly because the deck has gold-stamping on it, and the shade of orange can, at a stretch, be described as deep-gold.
And that's how I choose which coloured silks go with which coloured decks: I theme them. For instance, my Herbal Tarot has a tie-dyed silk in a couple of shades of green for the colour of herbs' leaves. My Hudes is in a sepia cloth with fine linework over it that sorta matches the antique maps and leaf-veins in some backgrounds.
Sometimes I'll choose a silk for a deck, and it will live in it for months or even years, then I'll decide that the silk suits another deck better, and change a couple around.
It's not to do with the energy of the decks or the purposes for which I use them. It's to do with the colours of the silks, somehow, fitting in with the colour-palette of the deck as a whole.
Well, you wouldn't wear crazy zigzag scarlet and black undies under thin white pants, would you.