diff --git a/src/scripts/model_maker.py b/src/scripts/model_maker.py
index ab3b29ad074b242870b57d64f4d76174519350d9..6e2d3d50e20f538a528ba64cf1850ebda9ab21b2 100755
--- a/src/scripts/model_maker.py
+++ b/src/scripts/model_maker.py
@@ -964,10 +964,10 @@ def write_obj(scatterer, geometry, max_rad):
     out_model_path = Path(str(geometry['out_file']) + ".obj")
     out_material_path = Path(str(geometry['out_file']) + ".mtl")
     color_strings = [
-        "1.0 1.0 1.0\n", # white
-        "1.0 0.0 0.0\n", # red
-        "0.0 0.0 1.0\n", # blue
-        "0.0 1.0 0.0\n", # green
+        "0.5 0.5 0.5\n", # white
+        "0.3 0.0 0.0\n", # red
+        "0.0 0.0 0.3\n", # blue
+        "0.0 0.3 0.0\n", # green
     ]
     color_names = [
         "white", "red", "blue", "green"