Steve Vai has probably had more signature collector edition guitars than anyone I have ever seen. His original guitars were all Ghostbuilt for him by his long time friend Joe Despagne (AKA Jem). Steve's actual guitars are mostly handmade.
Below you will see Steve with a beautiful Tiger Eye 1986 PRS. Most celebrities own 1985 0r 1986 PRS Guitars (That is when PRS's Were Awesome Guitars)
Even though the guitar looks reddish in the picture it must be the stage lighting because the guitar is absolutely a Tiger Eye color.
Steve Vai Playing PRS