added button skin template

src/main/java/webcrawler/visualiser/RunSkin.java

@@ -0,0 +1,14 @@
+package main.java.webcrawler.visualiser;
+
+import com.sun.javafx.scene.control.skin.ButtonSkin;
+import javafx.animation.ScaleTransition;
+import javafx.scene.control.Button;
+import javafx.util.Duration;
+
+public class RunSkin extends ButtonSkin {
+    public RunSkin(Button button) {
+        super(button);
+        ScaleTransition transition = new ScaleTransition(Duration.millis(200));
+        
+    }
+}

src/main/resources/stylesheets/visualiser.css

@@ -8,7 +8,7 @@
 }
 
 .button {
-    -fx-background-color: ;
+    -fx-background-color: #4c6a6b;
 }
 
 .label {