Dude that is not Naruto and those were not rasengans. They recognized the balls as chakra just chakra not rasengans. The fact that the rasengan changed color during the battle with Sasuke was because he was using the Kyuubi and if it was Naruto it would still be blue. Naruto has not taught anything to the Kyuubi nor is the Kyuubi able to do such an attack because of Naruto its all Kyuubi.
God somebody makes a ball of chakra and it must then be a rasengan. Medical ninjas make balls of chakra all the time in different colors too, so what. The relationship you are suggesting exists between Naruto and the Kyuubi simply doesn't. Naruto may be useless without the Kyuubi but the Kyuubi certainly doesn't need an idiot like Naruto. The Kyuubi is sentient chakra and using its chakra it can do whatever the hell it wants it can use the chakra however it wants in whatever shape or form.
The Kyuubi's chakra comes in many shapes and forms for example. it can form a cloak of armor around Naruto, it can form separate arms, heads, tails what have you, sometimes it appears in the form of normal chakra as in Naruto's battles against Neji and Gaara or it can come in a solid form like it is around Naruto now or it can be in a liquid form like during Naruto's battle with Sasuke or when his tails just begin forming. It can even come as it did in the last episode when Naruto attacked Kabuto or back when Naruto fought Sasuke, as wind. When Kabuto was attacked here he made it a point to say that Naruto attacked him with just his chakra and when Naruto was fighting Sasuke he literally blew away Sasuke's fire jutsus and again they made a point in saying that it was using just chakra although it appeared to be a white gust of wind. Its sentient chakra it can do whatever it wants if it wishes to take the form of a ball of chakra it has nothing to do with the fact that Naruto happens to know a technique that is a ball of chakra and I've already told you why this technique isn't the rasengan.
I've noticed that someone said that the blue balls of chakra were Naruto's chakra, wow. Uh its not that is not how it works there isn't and never has been any "mixing" of the chakra. Its the Kyuubi's chakra and its Naruto's chakra either or never both. They cannot be simultaneously used and they never have been. I could go into a long explanation but instead I'll just give you some example's, when Jiraiya first taught Naruto the summoning he had to make Naruto use up all his chakra before he could use the Kyuubi's and during Naruto's battle with Neji, Neji sealed Naruto's chakra but Naruto could still use the Kyuubi's that is because they are separate. The seal allows Naruto to gain access to the Kyuubi's chakra but they don't mix he can't use his chakra then use the Kyuubi's then go back to his or use both at the same time it doesn't work that way. Once he uses up his chakra and begins using the Kyuubi's then its the Kyuubi's until whatever amount he took is all used up then he is out of chakra that simple.
There is no inconsistency here Naruto is not considered a monster because he can move using vast amounts of the Kyuubi chakra. He is considered a monster because he has access to the Kyuubi's vast amount of chakra. Until now using lots of chakra hasn't hindered anyone while that is "true" but for one exception that I don't care to talk about, there is a reason for that. Until now no one has used the amount of chakra that Naruto is currently using but more importantly the other people's chakra has been naturally generated. We've seen guys using large amounts of chakra but all their chakra with the exception of Gaara has been naturally generated. Meaning its their own chakra so not only is their body used to the chakra itself but its their chakra they produce naturally meaning they aren't able to generate more chakra than their body will be able to handle.Originally Posted by Kraco
Not only is the Kyuubi chakra "foreign" to Naruto, there is far more chakra than he could ever produce naturally meaning its more than his body can handle, not only that but the chakra surrounding his body as was stated before is a solid cloak of armor. Not only would anyone have trouble moving in a cloak of armor covering their entire body but the Kyuubi's armor as you can see is very dense. It was also stated that not only is it a cloak of armor but the armor as was shown is destroying the very body it is protecting, the reason Naruto is able to move at all is because while the Kyuubi's chakra is destroying his body it is simultaneously repairing it.
Where there is and always has been inconsistency is in the coloring of chakra in Naruto. Its something that has always bothered me and I never understood why they did it and since some of you are making a point about it now I think I should talk about it. Example the blue balls of chakra you saw floating around Naruto aren't supposed to be blue. Though the manga is in black and white there are often colored pages included and in one of those the balls around the Kyuubi were red and purple. Red being the chakra's normal color and purple the color it turns into when condensed. There are many other examples such as when Naruto used the Odama rasengan against Itachi, it was red in the manga which it should be since Naruto was clearly using the Kyuubi's chakra but they chose to make it blue.
I don't know how it could be blue since Naruto was using the Kyuubi's chakra his whiskers were prominent as it always gets when he is using the Kyuubi's chakra and even his eyes had turned red but yet the rasengan was blue. Even in the moments just before the attack when Naruto was trying to break out of Itachi's genjutsu he was using the Kyuubi's chakra which was red. I think that that was a major slip up in the anime not that slip ups are uncommon in Naruto.
A few other examples when Akatsuki were sealing Gaara Skukaku's chakra appeared to be red but I was always under the impression that only the Kyuubi's chakra was red. Another early example and this was way early was when Kakashi was fighting Zabuza. Other than the Raikiri which is blue Kakashi's chakra is supposed to be white because his dad had white hair, a white blade(I think) and white chakra hence the name White fang and Kakashi was supposed to have inherited that from his father. Yet in his battle with Zabuza when they were releasing chakra getting ready for battle, the chakra around him was blue and that was not the only time.
Since I mentioned the raikiri another example of mis-coloration was when CS2 Sasuke used the chidori against Naruto low level chidori is or can be white and higher levels are blue. For some reason they decided to make Sasuke's chidori black which didn't make any sense to me and I think that was only done to emphasize that this one was stronger than his normal one which was obvious. Naruto's rasengan turning purple didn't make sense either especially since later on the Odama rasengan was shown to be red and the Kyuubi itself, which is greatest condensation of its chakra, was red.
This just goes to show that you can't really base anything off of the color of chakra in Naruto, hell in the first two Narutimate games the chakra was yellow you would think that someone would have noticed that earlier.