A theory on the chakra system.

[Vestige]

Entities whom have truly brought their polarity to the negative will have their energy move in an absorbent fashion: Downward. As a positive entity's intelligent energy moves from red-ray (1st chakra) to violet-ray (7th chakra), the negative entity's energy will move down from violet-ray to red-ray.

So knowing this, would it be accurate to say that the negative entity is working towards red-ray energy in the end? Death? (Yes, it's not truly death but it is really blank energy.) It is known they mainly work with the lower energies such as red, orange and yellow.

But it is surprising how non-linear their path is: Achieving violet-ray then wanting to bring everything downwards to the red-ray?

Would a negative school of thought preach red-ray as the peak or highest attainment of the chakra system?

I think upward and downward flows are used by both positive and negative polarities.

However, I think downward flow for a negative entity would be harder based on:
(1) personal experience of upward and downward flow of energy, and
(2) in particular with difficulties I've had with upward and downward movement depending on blockages, and
(3) based on my understanding of the Ra material and the energy centers in that a negative's blue and green are closed, and they focus on red, orange, and yellow primarily, with some indigo and violet.

Typically, a negative's red, orange, and yellow are much stronger than indigo and violet (hence when Ra talks about seeing their spectrum, their colors are muddied with red orange and yellow almost like a brown). So it's going to be much harder to bring in energy into their violet, then to their indigo, and build it enough to burst through to their yellow.

Similarly, it's much easier for negative to build crazy red, orange, and yellow, and then burst through to indigo (and violet if they want).

Also, I think downward and upward little to do with absorbing energy - my understanding is that both upward and downward flow of energy transmits energy to and from the universe if it connects red and violet (either way you go, unless you stop it somewhere else, it flows through your being, so it's not really absorbing unless you don't connect red to violet or vice versa)

I think the negative path would preach control over the energy. Be it red, orange, yellow, indigo - whatever you need for the moment to exert your will over creation, you focus your energy there. The positive path would be more about balance in my opinion, and that balance to be used to serve others as well as your own will.

So while I think both negative and positive use both paths, I think if there are any tendencies as to whether negatives use one more than the other, I think they would actually use more upward than downward. But I could be wrong!

I would concur in large part with you had offered, xise, and likewise what unbound had offered.  Q'uo has said this:

So, we would suggest that the question of raising the level of the energy center activation is, for the evolving seeker, not the only question to be addressed, but rather, it is of equal significance and increasing importance to engage in the process of balancing all of the energy centers in relation to one another. This requires continually going back down to the lowest and moving back up to the highest. and going back down and moving back up, and going back down so that one learns to play that tone poem which is the energy system with more and more skill, and more and more clarity, and more and more devotion to being the highest and the best and the clearest channel for the energies it is one's privilege to convey through the various expressions of the self.

I feel that this passage also (from another session) complements the previous:

You are capable of embodying that which you can pull through from above by
your desire. If your desires are for lust, then you shall leave your kundalini in red ray.
If your desires focus upon personal relationships, then you shall raise your kundalini
to the orange ray.
If your true desire is for marriage and a good work situation, then you shall raise your
kundalini to the yellow-ray level.
If your deepest desire is to open your heart, then you shall raise the kundalini to the
green-ray level.
If your deepest desire is to learn how to love with wisdom and to know what it is to
have compassion while invoking justice, then you move into those energies of
acceptance and of justice that are invoked in blue ray.
And when you finally desire above all things to be devoted ultimately and completely
to the one infinite Creator and live in the precincts of faith, then by your desire you
have pulled up the energy into indigo.

I ask you to notice the detail in the phrasing.  This is how I interpret it: I ask myself, what does one do with a desire?  What do we do when we want something?  Or, how do we want to be?  We want to be ready.  We get ready.  So, why might positively-polarized entities, or those who seek that polarity, desire to balance themselves across the full spectrum of energy centers?  If the desire is to serve others, then it would be good to be ready to serve others in whatever way is appropriate to those others. 
Why is this spectrum traveled up-and-down-and-up, and up-and-down-and-up (aside from the metaphor of the octave in musical scales)?  I'll quote from another session again:

To be sure, there are those within your density that have chosen another polarity; that polarity being what we have called service to self. Those who function in the manner of serving primarily the self are those who disdain the opening of the heart center, finding it to be foolish to dwell there, for it seems to those who have chosen this polarity to be such as to give away the authority or the power of one's being.  Now, it may so seem to one whose sense of self is such that it creates a kind of rotary pattern that moves from the yellow ray center back down to the orange ray center, back up through the yellow, and so on, and so on, and so on.

We are asked to open the heart--to accept what is in front of us, inside us, all around us.  Sometimes, we will not be able to protect ourselves.  We will feel insulted, or taken advantage of, or we might simply feel weak or frustrated, if we perceive a failure from within ourselves.  Sometimes, we will not be able to serve others, or we may feel we failed to serve others, with what attempt we make.  For the negative entity, or, perhaps, for any unbalanced entity, the perceived lack or the perceived failures threatens one's authority and power.  The response is fear.  What is fear?  Separation.  From what?  Not from the object of fear--which is why fear, or resistance, which is similar, simply attracts more fright.  Fear separates from all else, or, all others.  An entity who seeks the positive path and has some significant imbalance in the yellow-ray might desire a good workplace and fear that they won't get it.  So, their focus stops there.  Their desire stops there.  Their energies become devoted to getting that good job.  Now, eventually, I feel, the positive entity, even one who is unbalanced, even one who obsesses a little... they might ask for help, or, on the flipside, they might neglect their relationships a little... but if they  consciously seek the positive path, then... Well, they're unlikely to enter the "rotary pattern" of the negative entity.  The positive entity will eventually, I feel, reach the green-ray energy of acceptance by letting their frustrated energy settle.  Either a friend steps in and helps advocate for their employment, or they find a different job entirely, or they accept being unemployed for a while--whatever.  They move down to the orange-ray, spend some time learning a new skill, or just recharging with some friends, and then step back up to the yellow-ray when they're ready.  Then they enter green, blue, indigo...
Now, whereas the positive entity might want the good job so they can provide for their family, or so they have more time to meditate (so as to be more connected with the true identity of others), or whatever, the (conscious) negative entity wants the job, or whatever is the object of their desire, as a service to themselves.  When the positive entity realizes that they've stepped on some toes or simply been obsessive--then come the apologies, the amends, the new approach, because service-to-others is the goal.  For the negative entity, the other-selves are variables--confounding factors, if you will--but, of course, we have billions of people on our planet... thus, the negative has an immense chessboard and spends their time shuffling and reshuffling (rotating) the pieces so they can get to where they want. 
The negative entity sees their power as external: it IS NOT inside them, so they must attract it back to them (like a magnet) and reabsorb it... finding confidence by forcing it, by grasping and pushing.
The positive entity sees their power as internal: it IS inside them, so they can devote it to other people, to other ventures, and can just let it flow (or, radiate) out and up... finding confidence through faith, through surrender and acceptance.