I'm certain I'd seen publicity photos for a Blue Bluestreak a while back, but I wasn't interested so I didn't pay attention. Couldn't tell you if it's been released yet, but it was definately an ehobby exclusive.
All right. First off, Bluestreak, like many of the 1984-1985 issue TFs, came from a previous Japanese toy line 'Diaclone.' There were two versions of this toy available: One with blue sides and a silver hood & roof, and one with a black hood roof & silver sides. When Hasbro brought the toy over to US shores as Bluestreak, they used the blue version for Bluestreak's box art and instructions. They used the black hooded version for the cartoon. Then they fused the two together and made an all-silver Fairlady Z named Bluestreak.
In 2002, Takara (the japanese TF company) reissued Bluestreak in his Diaclone black hood & silver sides colors, this one called 'Anime Bluestreak' because it was colored like the cartoon. Hasbro is bringing over the Anime Bluestreak repaint this year, but they lost the copyright to the name 'Bluestreak' over the years and thusly are renaming him 'Silverstreak.'
It's all moot with the Blue Bluestreak anyway, as the name never had anything to do with his color, but rather his habit of talking.