Why "Blanquillo?"

We decided to name our new Escape 19 trailer "Blanquillo."  This is Spanish for "little white thing."  We originally thought about naming it "huevo nuevo"  as I like the alliteration, but I found that "huevo" means "egg" but also is often used for "ball" as in testicle.  That seemed too crude for us.  The Urban Slang Dictionary suggested "blanquillo" as an alternative, more polite term.
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Why a Spanish term?  We live in northern California and there is a heavy Spanish influence here.  We saw others using French terms, so we thought about possible names in other languages and Spanish seemed appropriate given the area where we live.