This is the documentation of version 1.0.0-rc.4. Go to the latest version, 1.0.0-rc.5.

Variable landmarkTextureUses`Const`

landmarkTextureUses: readonly ["mask", "detail", "color"]

What a landmark's own texture gives its look, besides carving its silhouette:

mask: nothing more; the landmark is shaded in its color.
detail: its light and shade, over the color, as facade detail.
color: its colours, in place of the color.

Whatever the use, the map's light shades the landmark.