diff --git a/assets-fx b/assets-fx
index ffc3f5f..bc1e99c 160000
--- a/assets-fx
+++ b/assets-fx
@@ -1 +1 @@
-Subproject commit ffc3f5f595509d1d952a02a45a4a7b28c6ecc4ef
+Subproject commit bc1e99c2db0a5c85f68b2be6c1638debb061b6ab
diff --git a/include/level.h b/include/level.h
index bc725ed..076a950 100644
--- a/include/level.h
+++ b/include/level.h
@@ -8,6 +8,7 @@
 typedef struct Level {
 	uint width;  /* in tiles */
 	uint height; /* in tiles */
+	uint16_t bg_color; /* background color */
 	const Tile **layers; /* points toward the level content */
 	uint8_t layers_count;
 	uint8_t solid_layer; /* id of the solid layer */
diff --git a/levels b/levels
index 5458e79..144f914 160000
--- a/levels
+++ b/levels
@@ -1 +1 @@
-Subproject commit 5458e79f752d5f16fb95bb7d6fe90833ee8edfb4
+Subproject commit 144f9142f3b7a9bf015fd254516bfa3342d370fc
diff --git a/src/main.c b/src/main.c
index 7886392..f2fa8ac 100644
--- a/src/main.c
+++ b/src/main.c
@@ -87,7 +87,7 @@ void step_event(Player *player, const Level *level, Camera *camera, Input *input
 }
 
 void draw_event(Player *player, const Level *level, Camera *camera, Input *input, uint step) {
-	dclear(C_WHITE);
+	dclear(level->bg_color);
 	level_draw(level, camera);
 	player_draw(player, camera);
 	#ifdef DEBUG
diff --git a/src/player.c b/src/player.c
index d7a8742..0c09e6a 100644
--- a/src/player.c
+++ b/src/player.c
@@ -56,7 +56,7 @@ void player_set_vars(Player *player, const Level *level) {
 	pos.x -= 2;
 	flags |= player_collide_or(player, pos, level);
 	/* test for each flag */
-	for (int i = 0; i < sizeof(Tile_flags) * 8; i++) {
+	for (uint i = 0; i < sizeof(Tile_flags) * 8; i++) {
 		if (flags & 1) {
 			switch (1 << i) {
 				case F_ICE: