Filled, with a hairline white edge — the same trick the home marker
uses. A ring is an outline drawn over whatever is beneath it, and eight
pixels of one over the satellite imagery was barely visible, which is
the whole reason the layer exists to be looked at.
Its own colour, in its own key, beside the switch that turns the layer
on. Separate from the decode colour deliberately: that one exists
because the band palette disappears over some basemaps, and cyan over a
pale sea has exactly the same problem for exactly the same reason. One
control for both would have forced the two layers into a single colour,
which is the distinction it took a shape to draw in the first place.
The picker only appears while the layer is on, since it configures that
layer and nothing else, and it is a portable UI pref like the other map
colours, so it travels with data/.
rouggy
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