I’d go with the green or imperial purple, colors that compliment dark skin nicely.
I actually love taupe on darker skin tones because of the contrast. I would just suggest getting what color you feel the most comfortable wearing & will get the most use out of. I’m not big on certain colors on me so I don’t wear them often & that would be a waste of money if you bought pants and rarely wore them. Kill it doll!
I’m not encouraging you to think that because you’re dark skin you have a select set of colors to wear. HEY…. wear whatever color appeals to you the most.