Board Thread:Boruto Discussions/@comment-25319479-20160502145551/@comment-1872728-20160513040352

UltimaDude wrote: The color difference is extremely clear and not as discrete as those you mention I'm sure White and Purple are discrete enough. If you really want to be that specific, let's just say utilising Natural Energy will give you a type of yellow iris colour, and not a specific type of yellow. The toads have yellow scelera with black, horizontal pupils They do have yellow irides. Refer to the latest episode, where they showed a toad having both a sclera and an iris. Even if you don't consider this canon, animal eyes are different to human eyes, so if they don't have an iris, the equivalent would naturally be the sclera.