yeah otherwise my light shirt comes out covered in dark fibers and vice versa. When I had only muted colors I was able to wash together. I also started switching to non toxic clothes but still have some synthetic items so they’re separated too, so the safe clothes don’t get unnecessary covered in microplastics (they’re emitted more intensively during washing). And then wool and other delicate clothes get ruined by normal spinning cycle so they need to be washed separately too.

But I just have a divider in my laundry basket so I don’t have to sort them out