```ts
// Button.stories.ts

import type { Meta } from '@storybook/angular';

import { Button } from './button.component';

export default {
  /* 👇 The title prop is optional.
   * See https://storybook.js.org/docs/7.0/angular/configure/overview#configure-story-loading
   * to learn how to generate automatic titles
   */
  title: 'Button',
  component: Button,
  //👇 Creates specific argTypes
  argTypes: {
    backgroundColor: { control: 'color' },
  },
  args: {
    //👇 Now all Button stories will be primary.
    primary: true,
  },
} as Meta;
```