['red', 'blue', 'yellow'].find((d, i) => i === Math.round(Math.random() * 2))

That's not a safe way to pick a random color from an array.

`Math.round(Math.random() * 2)` might produce the following sequence: 2, 2, 0. The find callback is called with 0, 1, 2, so it returns nothing.

Maybe they were going for:

    ['red', 'blue', 'yellow'][Math.round(Math.random() * 2)]

If they intended for `undefined` or `null` to be a valid result, then it would be better to write:

    ['red', 'blue', 'yellow', null][Math.round(Math.random() * 3)]

Haha, I submitted a PR: https://github.com/tannerlinsley/react-move/pull/1