Does this really matter? If an element isn't
both in the anime and the manga, it means that it's not in the
"""official""" source, ie. Toriyama's story outline. On that note, it's the anime writers that invented Kaioken Blue, so Skeeter49 does have a point. That's not to say it wasn't hype as hell. It was one of the few good things about that one arc. Plus, if the anime writers can sneak it into future plots, like they did in the Future Trunks saga, I guess it hardly matters that it wasn't Toriyama who came up with the idea.
I have to say that I thought Toyotaro's ideas for filling in Toriyama's blanks were better at first, but it seems that neither the manga nor the anime gets it right at all times. If they ever adapt Super's plot into a game or something, I hope they pick the best ideas out of both so that we can have the "definitive" version of the story.