/// <summary>
/// Stores original color of the part being highlighted
/// </summary>
/// <param name="index">Index of the part in the Articulation chain</param>
private void StoreJointColors(int index)
{
Renderer[] materialLists = articulationChain[index].transform.GetChild(0).GetComponentsInChildren <Renderer>();
prevColor = new Color[materialLists.Length];
for (int counter = 0; counter < materialLists.Length; counter++)
{
prevColor[counter] = MaterialExtensions.GetMaterialColor(materialLists[counter]);
}
}