I made a mock up of it (yes, ik this is battle of Yavin but this had the greatest concentration of X-wings) and I changed to tint so that they look less CG it was so shiny in a matt world, just stood out in a bad way. As they are always referred to as red squadron I figure they should all have some red on them, maybe the patterns on the wings could always be red. I assume that the original idea was that they would have as many bands as corresponds to the pilots call sign, red Leader, two, three (Luke’s had five). That would also explain how they reconsidered each other’s ships and who to hail.

Saying this I just noticed that Luke’s X-wing isn’t his, they used red two’s fighter but Luke’s helmet and R2. SE = sigh…