storybook/docs/snippets/common/component-story-custom-params.ts.mdx

```ts
// Button.stories.ts|tsx

import { Button } from './Button';

// Replace your-framework with the name of your framework
import type { Meta, StoryObj } from '@storybook/your-framework';

const meta: Meta<typeof Button> = {
  /* 👇 The title prop is optional.
   * See https://storybook.js.org/docs/7.0/react/configure/overview#configure-story-loading
   * to learn how to generate automatic titles
   */
  title: 'Button',
  component: Button,
};

export default meta;
type Story = StoryObj<typeof Button>;

export const Primary: Story = {
  args: {
    primary: true,
    label: 'Button',
  },
  parameters: {
    backgrounds: {
      values: [
        { name: 'red', value: '#f00' },
        { name: 'green', value: '#0f0' },
        { name: 'blue', value: '#00f' },
      ],
    },
  },
};
```