public void Insert(int index, ColorWithAlpha value)
 {
     List.Insert(index, value);
 }
 public int IndexOf(ColorWithAlpha value)
 {
     return(List.IndexOf(value));
 }
 public bool Contains(ColorWithAlpha value)
 {
     return(List.Contains(value));
 }
 public void Remove(ColorWithAlpha value)
 {
     List.Remove(value);
 }
 public ColorWithAlpha Add(ColorWithAlpha value)
 {
     List.Add(value);
     return(value);
 }