User blog comment:Suparockr/List of Plotholes throughout the series/@comment-4950455-20120729072851

Another for the "not a plot hole but still baffles me" category: why did the Alliance Navy suddenly change its color scheme between 2183 and 2186? The Alliance ships during the climax of the original ME are white with red trim, while the Normandy SR-1 is black and white. In ME3, however, all Alliance ships are now blue and white, and it's the turians who use a red trim on their ships.

It's just puzzling.