Grant Gustin’s costume in the Arrowverse harkens back to the Silver-Age design again, but the DCEU version of the suit is a bit different.
In the comics it changed to the familiar all-over red suit with yellow streaks,when Barry Allen became the Silver-Age Flash in 1956.
Since the early pre-production days of Justice League, it was reported that The CW and DCEU Flash costumes would be noticeably different in design. Some fans have pointed out the similarities between the DCEU Flash costume and that featured in the Injustice video games, in particular.
A DC Extended Universe fan has constructed an authentic Flash costume and posted the results on social media.