🧱 = Fortified?
🚪 = Indoors?
🪨 = Underground?
🌊 = Underwater?
Especially when you need both line and fill colors! 🎨
This cool set of distinct colors was a good starting place and these tools helped as well, but in the end I had to do some by hand 👩🏫
Did my best to account for colorblindness with this tool but there are for sure still some issues 😩