I definitely remember seeing Gen1 pokemon art as a kid that seemed, not washed out exactly but a bit less saturated compared to, say, the Pokémon anime that aired on American TV. To the extent I thought about this, I guess I assumed that when the original creators of Pokemon in Japan were first working on it (I doubt I had heard the name Tajiri Satoshi at that point in my life), they were doing hand-drawn experimental art, still trying to get the final design correct.