Style type does not contain nested color inside array

[nikero41]

Describe the bug
When passing the color property in an array to the style prop, typescript complains

Reproducible test case
Pass an array to the style prop with the color property in it.

Expected behavior
The behavior should be allowed from typescript

[6TELOIV]

I can confirm that this is an issue, and that the pull request is the correct approach to adding color to the valid style props.

This issue arises when you are using an array of styles, such as when conditionally changing the color:

<FontAwesomeIcon style={[styles.regularIcon, error && styles.errorIcon]} />

The current type used only allows for color as an object property of the style prop, rather than of the styles:

Current (incorrect)

export type FontAwesomeIconStyle = StyleProp<ViewStyle> & {
  color?: string;
};

@snikoletopoulos PR (corrected)

export type FontAwesomeIconStyle = StyleProp<
  ViewStyle & {
    color?: string;
  }
>;

@robmadole this is a tiny/simple fix, would it be possible to include it in a release?

[rarenatoe]

Somebody please!
Review #164 !