The thing that has turned me off about RPO aside from the taste is the color.
Just like some people have had staining on their teeth with Olive-Oil (which I have never used) I should think that it might be possible with RPO. There are too many oils out there that are colorless and I never wanted to take the chance.
Please, if you do continue to swish with this, by all means let us know of your experience. It has some very beneficial qualities.