diff --git a/demo3.cpp b/demo3.cpp
index 7c65434..dc4b0f3 100644
--- a/demo3.cpp
+++ b/demo3.cpp
@@ -10,12 +10,14 @@
   license: CC0 1.0
 */
 
+#define SUBSAMPLE 1
+
 // redefine player's height
 #define PLAYER_SPEED (RCL_UNITS_PER_SQUARE * 6)
 #define RCL_HORIZONTAL_FOV ((3 * RCL_UNITS_PER_SQUARE) / 10)
 #define GRAVITY_ACCELERATION (RCL_UNITS_PER_SQUARE * 2)
 #define RCL_CAMERA_COLL_HEIGHT_BELOW ((3 * RCL_UNITS_PER_SQUARE) / 2)
-#define FPS 40
+#define FPS 255
 #define HEAD_BOB_HEIGHT 150
 #define HEAD_BOB_STEP 20
 
@@ -63,6 +65,9 @@ int16_t editCounter = 0;
 #define SQUARE_COLORS 4
 uint8_t squareColors[SQUARE_COLORS];
 
+unsigned char floorGradient[15];
+unsigned char wallGradients[SQUARE_COLORS][15];
+
 #define HEIGHT_PROFILE_LENGTH 256
 
 /// Used for terrain generation.
@@ -466,18 +471,22 @@ inline void pixelFunc(RCL_PixelInfo *pixel)
 
   if (pixel->isWall)
   {
-    color = pixel->hit.square.x != selectedSquare.x || pixel->hit.square.y != selectedSquare.y || (editing && pokitto.frameCount % 2) == 0 ?
-        squareColors[pixel->hit.type] : 30;
-    
-    intensity = pixel->depth / (RCL_UNITS_PER_SQUARE * 3);
-    intensity += pixel->hit.direction % 2 == 0 ? 2 : 0;
+    if (pixel->hit.square.x != selectedSquare.x || pixel->hit.square.y != selectedSquare.y || (editing && pokitto.frameCount % 2) == 0)
+    {
+      intensity = pixel->depth / (RCL_UNITS_PER_SQUARE * 3);
+      intensity += pixel->hit.direction % 2 == 0 ? 2 : 0;
+
+      color = wallGradients[pixel->hit.type][RCL_clamp(7 + intensity,0,14)];
+    }
+    else
+      color = 30;
   }
   else if (pixel->isFloor)
   {
-    color = floorColor;
-
     if (!pixel->isHorizon)
-      intensity = pixel->depth / (RCL_UNITS_PER_SQUARE * 3);
+      intensity = pixel->depth / (RCL_UNITS_PER_SQUARE * 4);
+
+    color = floorGradient[RCL_clamp(7 + intensity,0,14)];
   }
   else
   {
@@ -490,9 +499,6 @@ inline void pixelFunc(RCL_PixelInfo *pixel)
     color = imageBackground[2 + backgroundColumn * 44 + RCL_clamp(pixel->position.y - player.mCamera.shear,0,43)];
   }
 
-  if (intensity != 0)
-    color = addIntensity(color,intensity);
-
   putSubsampledPixel(pixel->position.x,pixel->position.y,color);
 }
 
@@ -558,6 +564,11 @@ int main()
   squareColors[2] = rgbToIndex(0,7,0);
   squareColors[3] = rgbToIndex(4,4,0);
 
+  initGradient(floorGradient,floorColor);
+
+  for (uint8_t i = 0; i < SQUARE_COLORS; ++i)
+    initGradient(wallGradients[i],squareColors[i]);
+
   player.setPositionSquare(4,5);
   player.mCamera.height = floorHeightAt(4,5);