Improve launch in JupyterLab button styling

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#7,488 opened on Jan 18, 2023 1 comment 0 reactions 0 assignees View on GitHub

enhancement

Description

We recently added a nice button for automatically launching/arranging plots in the Dask JupyterLab extension

https://github.com/dask/distributed/blob/17156e9c2a57609846270141f441d3700a729465/distributed/widgets/templates/client.html.j2#L32-L36

I find this button to be useful. However, we could probably improve the styling of the button

![Screenshot 2023-01-18 at 1 24 20 PM](https://user-images.githubusercontent.com/11656932/213276113-9347fa8d-caee-46ed-8e14-5219b437fb77.png)

cc @jacobtomlinson for visibility

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