diff --git a/camera-effects/grain-noise.gdshader b/camera-effects/grain-noise.gdshader
index 2f95492..8ea830c 100644
--- a/camera-effects/grain-noise.gdshader
+++ b/camera-effects/grain-noise.gdshader
@@ -5,18 +5,11 @@ void fragment() {
     // Readbackground and foreground images.
 	vec4 col = texture(SCREEN_TEXTURE, UV);
 
-    // Sepia tone, from
-    // https://www.techrepublic.com/blog/how-do-i/how-do-i-convert-images-to-grayscale-and-sepia-tone-using-c
-	vec3 sepia = vec3(
-        col.r * .393 + col.g *.769 + col.b * .189,
-        col.r * .349 + col.g *.686 + col.b * .168,
-		col.r * .272 + col.g *.534 + col.b * .131);
-		
     // Film grain, from
     // https://www.reddit.com/r/opengl/comments/1rr4fy/any_good_ways_of_generating_film_grain_noise
     const float noiseStrength = 50.0;
     float x = (UV.x + 4.0) * (UV.y + 4.0) * (TIME * 10.0);
     vec3 grain = vec3(mod((mod(x, 13.0) + 1.0) * (mod(x, 123.0) + 1.0), 0.01) - 0.005) * noiseStrength;
 
-    COLOR = vec4(sepia + grain, 1.0);
+    COLOR = vec4(col.rgb + grain, 1.0);
 }
diff --git a/docs/images/camera-effects/grain-noise.png.import b/docs/images/camera-effects/grain-noise.png.import
new file mode 100644
index 0000000..5c9db90
--- /dev/null
+++ b/docs/images/camera-effects/grain-noise.png.import
@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://dd670pxxqnj3a"
+path="res://.godot/imported/grain-noise.png-636753a66ba8f58b76cc3e76d70bf8fb.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://docs/images/camera-effects/grain-noise.png"
+dest_files=["res://.godot/imported/grain-noise.png-636753a66ba8f58b76cc3e76d70bf8fb.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
diff --git a/docs/images/camera-effects/sepia.png.import b/docs/images/camera-effects/sepia.png.import
new file mode 100644
index 0000000..e197fe8
--- /dev/null
+++ b/docs/images/camera-effects/sepia.png.import
@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://d1xdglibjvwm2"
+path="res://.godot/imported/sepia.png-a48b21a7580480e9f99c417e24150326.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://docs/images/camera-effects/sepia.png"
+dest_files=["res://.godot/imported/sepia.png-a48b21a7580480e9f99c417e24150326.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1