Related to https://mods.factorio.com/mod/cargo-ships/discussion/5d18e446a6b12f000c79e15f
I like that waterways have very low contrast to water, and I'm glad that you've made this optional in the above rather than changing it - however, I'd like their low contrast to also extend to map view, if this is possible. I think this would help to indicate that they aren't 'real' objects, just paths, as well as making island maps look cleaner, and differentiating ship paths from oversea trains (whether modded or on landfill). Something like this: https://i.imgur.com/tPNDOAO.png