Scale is all about matching 3 views and not necessarily an actual airplane. Many of the designs (especially the war years) are hard to pin down. So unless you actually have a real example to duplicate, you are creating an artists impression. This especially holds true with colors.
A perfect example is the JU 87 Stuka. It is almost impossible to find a 3-view that shows straight ailerons. The real airplane had straight ailerons. So in competition, you have to match your 3-view, even though it does not match the real aircraft. Not that this is a big deal. but I see a lot of discussion about what is and is not scale. It does not matter really as long as your model duplicates the docs. That is what is getting judged.