Board Thread:Boruto Discussions/@comment-25319479-20160502145551/@comment-24824859-20160508104720

Georgio722 wrote: Toad Sage Mode does give yellow iris. If you're talking about Jiraiya's, it's because it's imperfect, and he doesn't even have an iris.

Mitsuki's Sage Transformation is a special case, he could be using Sage Transformation with Sage Mode, we don't really know with the current available information. Plus, we weren't shown a coloured version of the transformation so we don't really know the colour of the iris either. No it doesn't, it gives orange irises. Go to the article page Why would he be using two forms of Senjutsu? It's been started that it's Sage Transformation. He doesn't have black scelera, do gee shouldn't have yellow irises