How to customize animations and backgroundColor

### Question

Hey, I'm trying to use this tool with MDX, and the cli.

I don't want to code anything, I want to focus on content.

I run the following:

```
spectacle --src gatsby-expo.mdx --theme theme.js --template template.js
```

It's really unclear to me how I am supposed to customize the animations and backgroundColors without requiring me to actually wrote code, is it even possible?

I've tried to customize the template, the theme, but I find it confusing. How am I supposed to pass the appropriate props to the Deck ?