Unity 4.6 Change Highlighted Button Sprite using C#

I'm so happy, I've found an answer that worked for me here:

 Sprite newSprite = Resources.Load<Sprite>("sprites/somesprite");
 SpriteState st = new SpriteState();
 st.disabledSprite = newSprite;
 st.highlightedSprite = newSprite;
 st.pressedSprite = newSprite;
 _button.spriteState = st; 

I think that means that you cannot access the variables in the existing SpriteState, but you can just create a new SpiteState that overrides the old one :-D

It looks a little tricky at the moment, Its very fresh meat and needs to get a good cooking. But I think its the image variable in the selected stuff.

http://docs.unity3d.com/460/Documentation/ScriptReference/UI.Selectable.html

I have not been able to test it as I have not been able to access the UI namespace yet

But I think this answer might get you a little closer to a solution http://answers.unity3d.com/questions/780629/unity-46-gui-select-button-via-script.html

a little convoluted right now and I am sure it will change.

Here is something I found on another post: using UnityEngine; using UnityEngine.UI; using System.Collections;

  public class TestMenu : MonoBehaviour 
  {
      /// <summary>
      /// This is the Sprite we're going to swap to.
      /// </summary>
      /// <remarks>
      /// This is set in Unity's Inspector.
      /// </remarks>
      public Sprite OtherSprite;
  
      /// <summary>
      /// The Array of Images.
      /// </summary>
      Image[] images;
  
      // Use this for initialization
      void Start() 
      {
          // Get all components of type Image that are children of this GameObject.
          images = gameObject.GetComponentsInChildren<Image>();
  
          // Loop through each image and set it's Sprite to the other Sprite.
          foreach (Image image in images)
          {
              image.sprite = OtherSprite;
          }
      }
  }