It seems that you want to keep the original filenames for what calibre calls formats, not books. Even if calibre kept such a thing, there wouldn't be a convenient place to show it, because there would be one per format. That aside, you can get some of what you want by creating a comments-type custom column and pasting the original paths for a book's formats into that.
What column are you referring to when you say 'numbers'? It that the rating? If you don't want to see it, you can hide it.
As for color, I will leave that to Kovid. My guess is that it isn't trivial.
Asking politely for features isn't something you need to be forgiven for.
