Trying out new Jupyter notebook themes without manually needing to install new css files. Once new css file is activated in the notebook, that style will be applied.
Once a style/css is installed, it's easy to activate from any notebook using the same HTML(open('/path/to/profile/custom.css', 'r').read())) command.
Find the URL of the .css for a theme that you like and decide on a name for the new profile. Then execute like this:
mynewstyle(new_style_url, profilename="newprofile_34")
Here new_style_url contains the URL to the .css you'd like to use and profilename holds the name of the profile (arbitrary).
