`GraphicCollection` feature data is not accessible

It would be useful to access the feature data, for example:

![image](https://user-images.githubusercontent.com/9403332/214213519-fa38ebf0-bbca-4b7c-ba02-02b0d2b827b4.png)

Currently resorting to this:

```python
[plot_temporal["temporal"].graphics[ix].present() for ix in range(len(plot_temporal["temporal"].graphics))]
```