User blog comment:Kaestal/My theory of Savitar being the Arrowverse version of Cobalt Blue (And therefore Eddie Thawne)/@comment-27673963-20170414150925/@comment-24152851-20170415225200

Sorry, I meant the blue lines on the costume.

I'm not saying it is future Barry, but their stories do have some overlap and could have been an adaptation of it. I have my own Savitar theory though that's someone else entirely.