```js
// Button.stories.js

import Button from './Button.vue';

export default {
  /* 👇 The title prop is optional.
   * See https://storybook.js.org/docs/7.0/vue/configure/overview#configure-story-loading
   * to learn how to generate automatic titles
   */
  title: 'Button',
  component: Button,
};

/*
 *👇 Render functions are a framework specific feature to allow you control on how the component renders.
 * See https://storybook.js.org/docs/7.0/vue/api/csf
 * to learn how to use render functions.
 */
export const Primary = {
  render: (args, { argTypes }) => ({
    components: { Button },
    props: Object.keys(argTypes),
    template: '<Button v-bind="$props" />',
  }),
  args: {
    backgroundColor: '#ff0',
    label: 'Button',
  },
};

export const Secondary = {
  render: (args, { argTypes }) => ({
    components: { Button },
    props: Object.keys(argTypes),
    template: '<Button v-bind="$props" />',
  }),
  args: {
    ...Primary.args,
    label: '😄👍😍💯',
  },
};

export const Tertiary = {
  args: {
    ...Primary.args,
    label: '📚📕📈🤓',
  },
  render: (args, { argTypes }) => ({
    components: { Button },
    props: Object.keys(argTypes),
    template: '<Button v-bind="$props" />',
  }),
};
```