Red tunics revisited

[AMELIANVS]

We know that marines wore blue tunics. But I would be surprised if they wore them because of characteristics like harmony, coldness or sadness which are associated with the colour blue ...

We don't really know it.Entire idea is mainly based on short passage in late 4th early 5th century Vegetius who only mentioned that Roman marines serving at Britain were using speciffic shade of blue on their service dress as well as on Ships and its canvas as a kind of camouflage.But Vegetius is not anyhow clearly saying if this was just speciality for marines serving in Britain only or if it was normal general practice used also at other Roman navy soldiers.We had some other evidence that Romans indeed considered blue color as the color symbolizing water and marines but nothing which would explicitely say us-Roman marines wore blue tunics(except British marines in uncertain period in time if Vegetius is correct).And as was already said they wore such color mainly as a form of camouflage so they would certainly not be interrested in some sadness feelings associated with,practical reason was the reason for its use.It was also already said that Romans were not viewing color symbolism necessarily always the same way as we do now.For example black had basically the same association for the ancient Romans like for us in modern times but for example pink was definitely not viewed by the Romans as a girly color unworthy of hard men or soldiers.