game.background_color option in twn.toml

src/rendering/twn_draw.c

@@ -500,7 +500,7 @@ void clear_draw_buffer(void) {
             .clear_color = true,
             .clear_depth = true,
             .clear_stencil = true,
-            .color = (Color) { 230, 230, 230, 1 }
+            .color = ctx.background_color,
         }
     };