Board Thread:Theories and Speculation/@comment-25093611-20160322113057/@comment-26369387-20160426210745

^ With Toad Sage Mode + Kurama Mode it made sense. With Six Paths Sage Mode, where only difference is missing eye pigment... That's just lazy. I'm fine with cross design, but it could've been more distinct by, say, adding circle surrounding the cross and in center of cross having hole(similiar to center of Itachi's MS design).

But no, Kishimoto's thought process went something like this:

"Hmm, how should I make SPSM different from regular SM..."

snaps fingers

"I got it! I'll just remove eye pigments! Kishi, you're mad genius!!!"

laughs madly

Yeah... *sigh*