```ts
// Button.stories.tsx

export const Primary: React.VFC<{}> = () => <Button background="#ff0" label="Button" />;
export const Secondary: React.VFC<{}> = () => <Button background="#ff0" label="😄👍😍💯" />;
export const Tertiary: React.VFC<{}> = () => <Button background="#ff0" label="📚📕📈🤓" />;
```