diff --git a/assets/map_tiles.png b/assets/map_tiles.png
index 33cd57b..5cb4c96 100644
Binary files a/assets/map_tiles.png and b/assets/map_tiles.png differ
diff --git a/assets/palette.json b/assets/palette.json
index 1f132f6..b61f138 100644
--- a/assets/palette.json
+++ b/assets/palette.json
@@ -1,6 +1,7 @@
 {
   "color": {
-    "transparent": [255, 255, 255, 255]
+    "transparent": [255, 255, 255, 255],
+    "BAD": [255, 0, 0]
   },
   "gui/theme": {
     "black": [0, 0, 0, 255],
@@ -18,34 +19,46 @@
     "border_color": "gui/theme:dark_dark",
     "bg_color_dark": "gui/theme:black"
   },
+  "map/theme": {
+    "black": [0, 0, 0, 255],
+    "dark_dark": [10, 10, 10, 255],
+    "dark_mid": [30, 30, 30, 255],
+    "dark_light": [60, 60, 60, 255],
+    "mid": [100, 100, 100, 255],
+    "light_dark": [150, 150, 150, 255],
+    "light_mid": [200, 200, 200, 255],
+    "light_light": [230, 230, 230, 255],
+    "white": [255, 255, 255, 255]
+  },
   "items/fg": {
-    "flame": [24, 120, 189],
-    "potion": [255, 205, 189]
+    "flame": "map/theme:white",
+    "potion": "map/theme:white"
   },
   "enemies/fg": {
-    "player": [255, 200, 125],
-    "gold_savior": [131, 213, 238],
-    "knight": [131, 213, 238],
-    "axe_ranger": [156, 172, 197],
-    "rat_giant": [205, 164, 246],
-    "spider_giant": [205, 164, 246]
+    "player": "map/theme:white",
+    "gold_savior": "map/theme:white",
+    "knight": "map/theme:white",
+    "axe_ranger": "map/theme:white",
+    "rat_giant": "map/theme:white",
+    "spider_giant": "map/theme:white"
   },
   "tiles/fg": {
-    "floor_tile": [40, 40, 40],
-    "wall_plain": [100, 100, 100],
-    "wall_moss": [100, 150, 100],
-    "ceiling_black": [100, 100, 100],
+    "floor_tile": "map/theme:mid",
+    "wall_plain": "map/theme:dark_mid",
+    "wall_moss": "map/theme:dark_light",
+    "ceiling_black": "color:transparent",
     "lava_floor": [200, 100, 100],
     "gray_stone_floor_light": [40, 60, 180],
-    "wood_wall": [70, 70, 70],
-    "BAD": [255, 0, 0]
+    "wood_wall": "map/theme:dark_mid"
   },
   "tiles/bg": {
-    "wall_plain": [10, 10, 10],
-    "wall_moss": [100, 100, 180],
-    "lava_floor": [100, 100, 50],
-    "gray_stone_floor_light": [80, 80, 80],
-    "wood_wall": [100, 100, 100]
+    "floor_tile": "map/theme:dark_dark",
+    "wall_plain": "map/theme:dark_dark",
+    "wall_moss": "map/theme:light_dark",
+    "ceiling_black": "color:transparent",
+    "lava_floor": "map/theme:dark_dark",
+    "gray_stone_floor_light": "map/theme:dark_mid",
+    "wood_wall": "map/theme:dark_dark"
   },
   "devices/fg": {
     "stairs_down": [24, 205, 189],
diff --git a/assets/tiles.json b/assets/tiles.json
index b3908e9..49fbee7 100644
--- a/assets/tiles.json
+++ b/assets/tiles.json
@@ -6,6 +6,7 @@
     "ceiling": "ceiling_black",
     "light": 0,
     "foreground": "tiles/fg:floor_tile",
+    "background": "tiles/bg:floor_tile",
     "id": 0
   },
   "wall_plain": {
@@ -22,8 +23,8 @@
     "collision": true,
     "display": 9256,
     "light": 20,
-    "background": "tiles/bg:wall_moss",
     "foreground": "tiles/fg:wall_moss",
+    "background": "tiles/bg:wall_moss",
     "id": 2
   },
   "ceiling_black": {
@@ -32,6 +33,7 @@
     "display": 35,
     "light": 0,
     "foreground": "tiles/fg:ceiling_black",
+    "background": "tiles/bg:ceiling_black",
     "id": 4
   },
   "lava_floor": {
@@ -68,7 +70,8 @@
     "collision": false,
     "display": 8285,
     "light": 0,
-    "foreground": "tiles/fg:BAD",
+    "foreground": "color:BAD",
+    "background": "color:BAD",
     "id": 7
   }
 }
diff --git a/tools/icongen.cpp b/tools/icongen.cpp
index 63d2759..8fa53cb 100644
--- a/tools/icongen.cpp
+++ b/tools/icongen.cpp
@@ -217,20 +217,17 @@ void load_config(MapConfig& config, bool is_centered, std::string path, std::fun
         fmt::format("duplicate color for display={} key={}",
           (int)display, (std::string)key));
 
-    if(data.contains("foreground")) {
-      auto fg = palette::get(data["foreground"]);
-      config.colors.insert_or_assign(display, fg);
-    } else {
-      config.colors.insert_or_assign(display, DEFAULT_COLOR);
-    }
+    dbc::check(data.contains("foreground"),
+        fmt::format("{} has no foreground", std::string(key)));
 
-    if(data.contains("background")) {
-      auto bg = palette::get(data["background"]);
-      config.backgrounds.insert_or_assign(display, bg);
-    } else {
-      sf::Color bg{0, 0, 0, 0};
-      config.backgrounds.insert_or_assign(display, bg);
-    }
+    auto fg = palette::get(data["foreground"]);
+    config.colors.insert_or_assign(display, fg);
+
+    dbc::check(data.contains("background"),
+      fmt::format("{} has no background", std::string(key)));
+
+    auto bg = palette::get(data["background"]);
+    config.backgrounds.insert_or_assign(display, bg);
   }
 }