Yeah, I wouldn't mind seeing some more FRS, or Rasengan colorings either, but Rasengan panels aside, this is 1 of the more memorable panels out of the latest chapter, so I don't mind.
As for my opinion on your coloring, I think it looks good, but I honestly like Orochimaru's version, & Egaki's version a little better. The things I do like about your version, in comparison to Egaki's is that you used darker colors for Naruto's clothes, and eye's. I usually prefer darker colors, but the overall texture, the neatness, and the background, is what I like about the original. As for Orochimaru's version, I've just always liked his anime style of coloring.
Now as for the 1 thing I don't like about your coloring, it's how the last tooth on the bottom left jaw of Naruto, is hook shaped. Just looks a bit odd to me, but it's no big deal. Well, besides that everything looks fine to me, overall, I think you did a good job, so keep it up.