I'm totally loving the neon art I have been seeing in residential design lately. Typically we see these signs at cheesy bars but keeping the lettering white will keep it from seeming too over the top. The piece will also look a lot cleaner if you can have an electrician hardwire it so you don't have any messy wires showing. I haven't seen many opportunities to create some custom neon signs, but I'm sure the trend will show up somewhere like Etsy soon enough.
Elizabeth Stanley Design
J. Crew Headquarters via Habitually Chic
Sketch 42 Blog
Lucite and Lavendar Blog
The Peak of Tres Chic