```md
<!-- Button.stories.mdx -->

import { Meta, Story } from '@storybook/addon-docs';

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

<Meta 
  title="Accessibility testing" 
  component={Button} 
  argTypes={{
    backgroundColor: {
      control: {
        type: 'color',
      }
    }
  }} />

## This is an accessible story

<Story 
  name="Accessible" 
  args={{ 
    primary: false,
    label: 'Button'
  }}
  render={(args) => ({
    props: args,
  })} />

## This is not
<Story 
  name="Inaccessible" 
  args={{ 
    primary: false, 
    label: 'Button', 
    backgroundColor: 'red'
  }}
  render={(args) => ({
    props: args,
  })} />
```