These yarns are from Malabrigo, their Rios, a 100% superwash merino, a plied yarn with 210 yards (192m) per 100g skein.
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Gris is a cool tonal mix of medium and light grays.
Aniversario is a variegated blend of rich fuchsia and red, purple and violet, and a bunch of other hues in between.
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Take a look at The Rainbow and the West Wind for an idea on putting these yarns together.