bohyme color ring

I didn't want to have to buy a color-ring,  but my best guess at what color I am for Bohyme turned out too light, and I don't want to keep buying wefts and returning them at a loss.

Is there more than 1 kind of human hair color-ring for Bohyme?  Like, if I get what appears to be a standard Bohyme color-ring,
example http://www.hairandextensions.com/show.asp?cat=Color%20Ring&pro=Color%20Ring%20By%20Bohyme
Should that be good for all kinds of Bohyme extensions (pre-tipped, wefts, etc).  Or are there more specialized rings for them?

Thanks