Can't rearrange array elements in a custom inspector.

I am currently working with a friend on a script that generates a gradient into a skybox (example). The interface for it is messy and i wanted to try drawing a custom inspector that could display it cleaner and add functions I couldn't have before. What I currently have is a array of a class that contains a color a curve and a stop point. What I want to do is whenever I adjust one of the stop points to before another have it sort the array automaticly. Now I actually can get it to sort the array but it doesn't display the changes unless I close the foldout and reopen it.

Is there a ray to get it to refresh the interface?

 

I haven't used it myself, but maybe EditorWindow.Repaint will solve your update problem?