The palette
This is a city of stone and relief rather than water, so keep the ground quiet: the sandstone shifts from cold grey to honey depending on the light, which suits a greige field and a fine line. The one mass to commit to is Holyrood Park, and it wants a moorland green rather than a garden green, left rough so it argues with the two geometries in the centre. The hollow between the towns is doing structural work: it is what keeps the two plans apart. It is filled with gardens and with the tracks of the station; the gardens take the green of Holyrood, because a map has one ink for all its greenery. So it is that green, with the band of rails, not a pale band, that holds the two towns at a distance.