Configure fill?

[puntofisso]

Hi there, I'm mostly reverse-engineering the code as not a Vue expert and, looking at #21 this might be tricky but here we go. I'm trying to change the app to display building footprints instead of roads. This is relatively easy from a query point of view, as it only involves changing Query.Road to Query.Building in FindPlace.vue.

However, the footprints come as outlines and I can't work out if there's an easy way to add a fill to the building polygons. Does this require a major change in the WebGL functions or is there an option to style it so that in the example below, the buildings are solid red?