I like that they aren't matchy-matchy names, you know the kind that sound only slightly different to one another? Willow and Scarlet probably aren't names I'd ever choose as first names but they definitely sound nice together.
I agree with you there, Snowcake; it is no doubt refreshing not to hear another Makayla and Makenzie, Heaven and Nevaeh, or Mia and Mya. I have always wondered what the twin bearer's of near-identical names feel about it as they age, specifically if they are monozygotic and in their teenage-years when everyone seems to be struggling for individuality.