When you have a lot of sensors (I have 8), it is hard to see a particular sensor graph with so many similar colors. Right now, you can click on the legend to disable a graph, but it would be nice to include clicking on a legend name & enhancing a graph. Eg, successive clicks on a legend name cycle through ON, OFF, BRIGHT, ON, OFF, … etc for that particular sensor. You already show “Indoor Temp” brightened.
The chart library doesn’t natively support anything like that (I could probably make it work if I had to), but it does natively support hovering over the series or legend to highlight.
Example: Create Scatter Chart and Graph | Highcharts
Would that work?
I think that would work. Just some way to temporarily distinguish a sensor line.