is there such a thing as Gray Path witchcraft?, just wondering Options

So, i have been doing some research and i have found lots of stuff on Right hand or Left hand path witches, ie, light or dark. Is there such a thing as a middle hand path or a Gray path? i don't feel like a left hand, they seem to be into alot of the goth, vampire thing, which just isn't me. But the white witches just seem to be lacking something in the balance and passion department. Anyway, anyone have any thoughts on the subject?

I find the tree of life to be quite suitable to explain white and grey magic, left hand path and right hand path

The ToL itself is RHP by default, as the model of Adam Qadmon, which is an open circuit link between En Sof and the world. There are two ways a person could transform the ToL into anything indicative of the LHP. First, one could take the Lourianic model (from which the Hermetic model is derived), and raise Malkhuth to the Abyss of Daath - this would require one to first master the Qelifoth and reconstruct certain things that were lost during the Breaking. The second option, which I'm unsure of at the moment (because this model is still essentialy RHP) is some means of utilizing the diagram of the Gaon of Vilna, which is slightly different from the Lourianic diagram. While this one appears to be a closed circuit model, it may not actually be so (on the other hand, raisign Malkhuth to the Abyss of Daath is a wilful closing of the circuit, and thus more fitting of the LHP).

Grey magic corresponds to the pillar of mercy, for the simple reason that chokmah is grey in the queen scale. White magic is thus the middle pillar.

The "colour" of magic and the "colour" of a Sefirah are unrelated. White and black magic are generally defined based on their intent and their results. The all expansive and "selfless love" by which white magic finds itself most often classified by is more indicative of Hessed than anything else, and thus should be represented by the Pillar of Mercy. Likewise, the restrictions placed on Hessed by Gevurah (e.g. egocentrism and the idea that "love should not be wasted in ingrates") indicates that black magic is best represented by the Pillar of Severity. "Grey" magic, as teh balance between the two should only logically be classified by the Pillar of Clemency, of which Tifereth (resulting from the tension between Hessed and Gevurah) is the centre.

The right hand path is netzach, chesed and chokmah, and the left hand path is hod, geburah and binah

This results from a misunderstanding of what the RHP and LHP are, in a metaphysical sense. As a psycho-spiritual model of man, yes, one can say that Netzah, Hessed, and Hokhmah represent one way of living, and that Hod, Gevurah, and Binah represent another. In this case, speaking from a psycho-spiritual standpoint, rather than one of magical or metaphyiscal philosophy, the best way to walk is the path of Malkuth, Yesod, Tifereth, and Kether - you'll find this advice toward the beginning of Yesod Yesodei HaTorah, from Maimonides' Mishneh Torah.

However, as a map of magical philosophy, the ToL stands as a means of attaining the goal of the RHP. Only with serious work and transformation (which in and of itself is Qabbalistic antinomianism) can the ToL become the image of man turned Isolate Intelligence.