With the release of Rogue One audiences and long time Star Wars fans were treated to what was one extinct Blue Squadron. Originally ILM painted the X-wings in A New Hope blue. However, this color didn't work against the blue screens they were filming against and was subsequently changed to the Red Squadron we all know today.
With all the information on the internet today, I'm surprised that finding proper pictures of Blue Squadron X-wings is a difficult task. I've wanted to build Blue 2 for a while now and I couldn't find much of anything on this X-wing. So these are images I managed to capture of Blue 2 from the film.
Blue 2 wing, just as the shields went up.
Blue 2 making an attack on a Star Destroyer. It seems that some of Blue 2's markings were similar to Blue Leader/Blue1. However, the stripe down the hull is broken up in a similar style to Luke's Red 5 X-wing. Also noting that Blue 2 carries an R5 astromech droid.
The other side of the fuselage features 3 blue sections.
I'm going to keep searching the film and internet for more pictures of Blue 2. I still haven't quite identified the color of the R5 unit, though I suspect it was white with red highlights as seen in ANH. But based on one picture it also looks silver?
Update
I found these other pictures, they are from earlier in the film, and I found a continuity error. This is Blue 2, and Blue Leader is in the X-wing behind it. The scene follows Blue 2 heading towards the shield opening, and then the camera focuses on Blue Leader. Both X-wings pass through the shield gate before it's closed. After it's closed 2 X-wings crash into the shield and then Blue 2 pulls up narrowly missing a similar fate.
