The only paint scheme for the Le Champion that I'm aware of is the pale lavender with black lettering. Doesn't mean that it didn't come in white with red lettering, just that I've never seen or heard of it.
The Grand Jubile came close, and is the only Motobecane I know of with red lettering-- it came in silver, with red lettering, red cables, and red bar tape.
That's the one I lust for now...