White outline is a bit messy + doesn't look great on dark maps

[rm-hull]

Zoomed up to 500%:

With Carto "Dark Matter" maps:

Using css:

.leaflet-grid-label {
  -webkit-text-stroke: 4px #f4f4f5;
  paint-order: stroke fill;
  text-shadow: initial !important;
}

takes the glare off the white and renders as (zoomed/dark):

and