I love Shani - it symbolises "the scarlet thread" of Biblical and Jewish lore.
Ar first glance Shani might looks like a made-up or bimbo name without history or substance.
But it is Hebrew for "scarlet" and is rich in symbolism. At the moment it's a guilty pleasure name of mine (along with Leilani and Liraz) - but it could become more than that!
WDYT of Shani? Would you be tempted to use it instead of Scarlett (which always makes me think of "scarlet woman"?)
See
http://www.afsnet.org/sections/jewish/Elly_Teman.doc.