Overdying Alpaca

[Abby123]

I've dyed wool with acid wash Jacquard dye. But never alpaca.

I'm making a patterned mitten using 2 tones of the same yarn. I have a pale grey. And want to overdye half the yarn to black or charcoal. I know I need to use extra dye to get black. I'm wondering about how alpaca dyes. Is the timing the same? Does it need the same temperature? How well does it hold the color? Any tips?

Thanks