Tried out using the actual textures from the game but they don't really have the feel I want. I'll have to think about it.

tests/map.cpp

@@ -132,7 +132,6 @@ TEST_CASE("map image test", "[map-sprite]") {
 
     auto sprite = render_sprite(sprite_coord, size, display, map_sprites);
     sprite.setPosition({float(it.x * size.x), float(it.y * size.y)});
-    sprite.setColor({255, 255, 255, 200});
     render.draw(sprite);
   }