Correct Colored Lighting Export for Roll20

When exporting to Roll20, the lights are not being implemented properly.

This means that in order to get the lighting correct, the GM has to go in and edit each light source on the entire map manually.

This is a GM-facing thing, and not player facing. Players should never notice this. However, as a GM who makes many, many maps, this is a massive time-sink.

A video with a walkthrough of what is currently involved is available here: https://youtu.be/2CcaiWpJt6I

It'd be exceedingly valuable if the Roll20 export did the following things:

Add low-light settings to the light sources, allowing them to extend properly.

Add the correct color to each light source, so the the colors are correct, instead of simply rendering to the JPG.

Enabled Dynamic lighting as an option on import.