The Carbon CLI is really awesome and I love that it's possible to store and reuse a configuration as preset. One thing I'd love to add to the config though is the actual "theme colors" (i.e. what color e.g. variables, operators, keywords, comments, ...).

Basically these options from the Carbon web UI:

![Screenshot 2019-03-26 at 10 39 45](https://user-images.githubusercontent.com/4058327/5498

Have a look at: https://medium.com/stupid-gopher-tricks/streaming-data-in-go-without-buffering-3285ddd2a1e5

We should use buffered marshaling (should be easier on memory on large payloads) instead of things like

marshaled, err := json.Marshal(data)
if err != nil {
	...
}

Right now if you want the sprint burndown for example, you need to remember the board and the sprint number..

Ideally this is config drive, as it only changes when you start a new sprint..

So something like walter sprint burndown --template and it would then look in .walter/config.yml to see if there is a template: sprint: burndown config and then populate the internals so we don't