head of snake is darker than body

_src/assets/scss/_lib/_snake.scss

@@ -28,7 +28,10 @@ $fieldSize: 20;
   .target {
     background-color: red !important;
   }
-  .snake {
+  .snake-head {
+    background-color: color.adjust($color-primary, $lightness:-10%) !important;
+  }
+  .snake-body {
     background-color: color.adjust($color-primary, $lightness:-5%) !important;
   }
 }

_src/assets/ts/snake.ts

@@ -18,7 +18,10 @@ function drawField(){
             for(let y:number = 0; y<snake.length; y++){
                 let currentSnake = snake[y];
                 if(currentSnake[0] == i && currentSnake[1] == x){
-                    elementClass += " snake";
+                    if(y == snake.length - 1)
+                        elementClass += " snake-head";
+                    else
+                        elementClass += " snake-body";
                 }
             }