F map - show chunks outside the world border as red

This is a small detail, but I think it would be nice if chunks outside the world border were shown in red on the F map (as is already the case with Spawn/Warzone chunks). This is helpful for Bedrock players who can't see the world border as easily, but even for Java players I just think it's a nice touch. See screenshot for example (edited, to show what it would look like at the corner) ONE CAVEAT - if civ biomes are chunk-based (as in the old Civ Facs) this works well, but if they are biome-based/not chunk aligned, and chunks can show as "planes" for example when they are partially neutral, you could build your base without realizing you're at the edge of a civ biome and a small part of your base is neutral. (I'd personally prefer that chunks only show as "planes" if 100% of that chunk is planes for example, separate suggestion)