storybook/docs/snippets/common/storybook-theme-example-variables.ts.mdx

```ts
// YourTheme.js

import { create } from '@storybook/theming/create';

export default create({
  base: 'light',
  brandTitle: 'My custom storybook',
  brandUrl: 'https://example.com',
  brandImage: 'https://placehold.it/350x150',
});
```