diff --git a/src/core/data_formats/parsing/ninja/xj.ts b/src/core/data_formats/parsing/ninja/xj.ts
index bfcb8490..bab4d2a1 100644
--- a/src/core/data_formats/parsing/ninja/xj.ts
+++ b/src/core/data_formats/parsing/ninja/xj.ts
@@ -28,8 +28,8 @@ export type XjMesh = {
 };
 
 export type XjMaterialProperties = {
-    alpha_src?: number;
-    alpha_dst?: number;
+    src_alpha?: number;
+    dst_alpha?: number;
     texture_id?: number;
     diffuse_r?: number;
     diffuse_g?: number;
@@ -177,8 +177,8 @@ function parse_triangle_strip_material_properties(
 
         switch (type) {
             case 2:
-                props.alpha_src = cursor.u32();
-                props.alpha_dst = cursor.u32();
+                props.src_alpha = cursor.u32();
+                props.dst_alpha = cursor.u32();
                 break;
             case 3:
                 props.texture_id = cursor.u32();
diff --git a/src/core/rendering/conversion/ninja_geometry.ts b/src/core/rendering/conversion/ninja_geometry.ts
index be7fcfdf..44132b1a 100644
--- a/src/core/rendering/conversion/ninja_geometry.ts
+++ b/src/core/rendering/conversion/ninja_geometry.ts
@@ -239,6 +239,8 @@ class GeometryCreator {
         }
 
         let current_mat_idx: number | undefined;
+        let current_src_alpha: number | undefined;
+        let current_dst_alpha: number | undefined;
 
         for (const mesh of model.meshes) {
             const start_index_count = this.builder.index_count;
@@ -288,14 +290,24 @@ class GeometryCreator {
                 clockwise = !clockwise;
             }
 
-            if (mesh.material_properties.texture_id != null) {
+            if (mesh.material_properties.texture_id != undefined) {
                 current_mat_idx = mesh.material_properties.texture_id;
             }
 
+            if (mesh.material_properties.src_alpha != undefined) {
+                current_src_alpha = mesh.material_properties.src_alpha;
+            }
+
+            if (mesh.material_properties.dst_alpha != undefined) {
+                current_dst_alpha = mesh.material_properties.dst_alpha;
+            }
+
             this.builder.add_group(
                 start_index_count,
                 this.builder.index_count - start_index_count,
                 current_mat_idx,
+                true,
+                current_src_alpha !== 4 || current_dst_alpha !== 5,
             );
         }
     }
diff --git a/src/quest_editor/rendering/conversion/areas.ts b/src/quest_editor/rendering/conversion/areas.ts
index 1dc9e07a..9c4f30f3 100644
--- a/src/quest_editor/rendering/conversion/areas.ts
+++ b/src/quest_editor/rendering/conversion/areas.ts
@@ -28,17 +28,17 @@ const materials = [
     }),
     // Ground
     new MeshLambertMaterial({
-        color: 0xc0c0c0,
+        color: 0x405050,
         side: DoubleSide,
     }),
     // Vegetation
     new MeshLambertMaterial({
-        color: 0x60c080,
+        color: 0x306040,
         side: DoubleSide,
     }),
     // Section transition zone
     new MeshLambertMaterial({
-        color: 0x8040a0,
+        color: 0x402050,
         side: DoubleSide,
     }),
 ];
@@ -52,17 +52,17 @@ const wireframe_materials = [
     }),
     // Ground
     new MeshBasicMaterial({
-        color: 0xd0d0d0,
+        color: 0x506060,
         wireframe: true,
     }),
     // Vegetation
     new MeshBasicMaterial({
-        color: 0x80e0a0,
+        color: 0x405050,
         wireframe: true,
     }),
     // Section transition zone
     new MeshBasicMaterial({
-        color: 0x9070b0,
+        color: 0x503060,
         wireframe: true,
     }),
 ];