I just recorded a demo of my proof of concept: https://d189ym6tlc5mr2.cloudfront.net/misc/2023_08_12_eui_demo.mp4 UI is generated from the following type definition:
```
    #[derive(Debug, postcard::experimental::schema::Schema, Serialize, Deserialize)]
    pub enum Light {
        Off,
        On(Color),
    }

    #[derive(Debug, postcard::experimental::schema::Schema, Serialize, Deserialize)]
    pub struct Color {
        r: u8,
        g: u8,
        b: u8,
    }
```