Reccomendations for black/dark clothing that doesn't stain?

Hi, so I just learned that dark fabrics, especially if they're low quality can stain dolls and give them those black dots. Does anyone have experience with high quality dark clothes that doesn't do this and can reccomend me some pieces? or are all dark clothes bound to stain afrmter prolonged exposure? regardless, I'll exercise caution and store dark clothes and black haired dolls aside from the others just in case.