Need help filling in area between points in a line chart

Hi! I am wondering if there is any simple way of filling in the areas between lines in this time series line chart? I want the area under the green dotted line to be filled and the area above the red dotted line to be filled.

Cool use case!

You could partially achieve this with an area chart. This would fill in the area under the green line with green. Unfortunately, it would fill in the area above the red line with blue, and the area under the red line with red.

I don’t think your specific goal is achievable, but I think it would be visually compelling and totally worth a feature request!