Do not fill line graphs

[jbartels]

Is there an easy way to just have the line graph but do not fill it in? I would have emailed you or try to message you on IRC but seems as if you do not have any information other than your twitter handle.

Thanks in advance graphene is awesome and we are using internally at our company.

[jondot]

Hi there,
Very happy to hear you find graphene useful :)
Its completely fine to ask through here; but it may be wise if I put my direct details on the readme - thanks!.

For your question, you can very easily tweak all UI aspects through regular CSS,
here, you want to set the .area class to be transparent, so you can override the default rule, by adding a style like so:

.area {
  fill-opacity: 0; 
}

Feel free to let me know if this helps the way you need it.