Can hair somehow shine in all colors of the rainbow?

This is Rainbow Dash:

I somehow don't like this design, because this suggests that RD dyes streaks in her mane, which seems to me contrary to her character traits.

Which is why I like this fan design:

This hints these are not dyed streaks. Rather, her mane, apparently naturally, shines in all colors of the rainbow.

Is it possible that her mane acts like a prism, dispersing the light and producing this rainbow effect? Or is it possible that her hair gathers moisture from air and the water droplets produce a literal rainbow?

The latter option would be especially nice, because perhaps, once her hair gathered enough moisture, it would allow RD to perform such a trick:

If this is impossible, what would be the required changes to how the nature is wired to make this possible?

posted over 6 years ago

gaazkam‭

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