message: move key prop to iterator
diff: @@ -23,7 +23,7 @@ import {
  import Octicon from '@github/octicons-react'
  const Swatch = ({name, index, color, ...rest}) => (
  - <div {...rest} key={index}>
  + <div {...rest}>
  <Box mt={3} p={6} m={1} bg={`${name}.${index}`} />
  <Heading.h3 fontSize={2} px={1}>
  {name}.{index}
  @@ -195,7 +195,7 @@ const Index = props => (
  {['gray', 'blue', 'green', 'purple', 'yellow', 'orange'].map((hue, i) => (
  <div className='d-flex' key={i}>
  {theme.colors[hue].map((color, j) => (
  - <Swatch name={hue} index={j} color={color}/>
  + <Swatch name={hue} index={j} key={j} color={color}/>
  ))}
  </div>
  ))}
  