small fixes, and compiled with the pane of buttons

assignments/a2/src/main/java/Sidepane.java

@@ -32,28 +32,28 @@ public class Sidepane extends JPanel implements Observer
   }
 }
 
-private class Colours extends JPanel
+class Colours extends JPanel
 {
-  private jButton red;
-  private jButton green;
-  private jButton blue;
-  private jButton yellow;
-  private jButton purple;
-  private jButton orange;
-  private jButton cyan;
-  private jButton custom;
+  private JButton red;
+  private JButton green;
+  private JButton blue;
+  private JButton yellow;
+  private JButton purple;
+  private JButton orange;
+  private JButton cyan;
+  private JButton custom;
   
-  public colours()
+  public Colours()
   {
     this.setLayout(new GridLayout(0, 2));
-    red = new jButton("Red");
-    green = new jButton("Green");
-    blue = new jButton("Blue");
-    yellow = new jButton("Yellow");
-    purple = new jButton("Purple");
-    orange = new jButton("Orange");
-    cyan = new jButton("Cyan");
-    custom = new jButton("Custom");
+    red = new JButton("Red");
+    green = new JButton("Green");
+    blue = new JButton("Blue");
+    yellow = new JButton("Yellow");
+    purple = new JButton("Purple");
+    orange = new JButton("Orange");
+    cyan = new JButton("Cyan");
+    custom = new JButton("Custom");
     this.add(red);
     this.add(green);
     this.add(blue);
@@ -63,4 +63,4 @@ private class Colours extends JPanel
     this.add(cyan);
     this.add(custom);
   }
-}
+}