Board Thread:Theories and Speculation/@comment-27260817-20160203170532/@comment-3965545-20160203225326

The only reason they look different is because Naruto only had one half of Kurama(Yin) and Yang along with it when he first was using SPSM Kurama Cloak. Once he acquired both and fused both elements back together, he had YinYang Kurama.. Kurama has no normal elements because he has YinYang release. So when Naruto got YinYang Kurama his SPSM Kurama Cloaks changed. Therefor he turned into Six Paths Sage Mode, then he used his new Kurama Cloak which is different.. plus the Hashirama Chakra/Arm may change his chakra signature and remember his chakra was slowly fusing with Kurama's the whole time so that may have had something to do with it too.