Here are the strings ready to be transformed.
And here they are after their transformation.
Rather similar, you'll agree. Apart from a few which have gone green, and others which have turned grey (both reactions which I think I would have emulated, had I been immersed in a bleach solution!) the majority of fabrics look the same. I suppose it's a matter of trial and error, and it was worth a go, but I think some of them will be finding themselves in my charity rags bag in the near future - there's only so much brown a girl can hide in a scrap quilt!