Since they don't portray all the colors as the author has intended, with the team behind them possibly having little to no assistance from him, they should be treated no higher than the anime up on the canon ladder.
For example, the Rinnegan page notes Sasuke's Rinnegan to be red as if it were a fact. Until we get a colored chapter or volume cover, its color is yet to be revealed. It should be specified somewhere that these colored volumes are only as official as third-party goes.