A nice feature for colours would be to be able to export/import pre-defined colours (same as for symbols). This should include all defined colours i.e. colours 1>16 + feature colours + saved colours in .
It would help sharing the same colours between a group of users.

and it would be great if saved colours could organised e.g. drag/drop in the list.

A trick I didn't know. Thanks!

I see one issue doing so: I want to import colours/symbols/patterns in a pre-existing file with many caves. If I Load the entire configuration, then I loose all the instruments and surveyors list that I don't want to remove/replace. Maybe a step by step import would be good with the possibility to say if each group configuration (Parameters, instruments, Surveyors, Colours, Symbols, Saved Colours...) is to be overwritten, added (when possible) or ignored.