Really even the clothing was that colorful?

Then at least 90% of all historical (TV) documents, illustrations in books, etc. is wrong, because a lot of them illustrates most of the units in clothing having natural colors (brown, tan, dirty green, ...). I don't speak now about some Hollywood movies, but about serious historical reconstructions for the documentary cycles. There are few exceptions, but they are still just exceptions.
So far when I met some clothing consisting of more basic colors, the colors were still taken from the natural palette and they wasn't that bright.
So its hard to believe to such colorful representation when all materials around are depicting it in different way
But if you say that the clothing in that time was really looking like that, then I have no other option just accept it. I didn't study it in deep, just what I noticed when something got in my hands.