Violet Beauregarde
This is an "it happened to a friend of a friend story" so I can't exactly vouch for its veracity, but it certainly made my mind boggle.

Friend of Friend (I cannot even remember his name; I met him once and he was rather creepy) thought he was a perfectly normal young man living in Berkshire. He enjoyed porn and sex and wanking and all the usual things young men like. There was, however, a sense of something being missing from his repertoire.

One evening, he settled down with friends to watch the classic nightmare fuel Willy Wonka and the Chocolate Factory. Around rolls the seminal scene in which Violet Beauregarde chews gum and begins to turn into a blueberry.

Friend of Friend responds to this scene with an unprecedentedly enormous erection. Not only did he receive his sexual awakening, discovering his love of inflating blue lolitas, but his friends are also alerted to the fact.
( Queen of Cheesecake, Fri 23 Oct 2009, 15:58, 2 replies)

mmm
Oompah Loompahs
( Blind Meach Cautiously optimistic, Fri 23 Oct 2009, 16:05, closed)

Surprisingly, he's not alone.
In my travels on the 4chan-style porn boards, I did indeed find a subsection wholly dedicated to blue, inflating girls. Some of the posters even requested the drawings be of the girls 'popping'.

Creepy.
( Bats, Fri 23 Oct 2009, 16:20, closed)