I’ve got an problem with colours leaking to places they should not.  Has been present since at least 5.3.12 through 5.3.14

For example, if I add this statement to a layout;

            symbol-colour point station-name [54 7 60]         

Then my station names are purple, as intended, but a few of the wall altitudes will also be purple, which is not as intended.  If I move them to another wall point, then usually I can get them to drop the rogue colour eventually.  In the example below, 178 is black as intended, and 185 is the wrong colour.

I see I also have a similar thing going on with the rock-edge lines.  One of the 4 rocks below has grey rock-edges, and it is even more bizarre, because it persists when I drop all colour statements from my layouts.

(Don’t worry about the coloured centrelines – I am experimenting with visualisation of the various shot flags – and that at least seems to be behaving well)

Can anyone offer a solution, or a place to look for the problem? – my guess is that either the meta-post for writing the station-name or the wall altitude is written consistent with whatever the therion convention is, but when I search the source I cannot decipher how to find the code for these two particular symbols.

Bruce