What do you need to do to save the changes you make to elements in Model Builder? I want to highlight a few nodes in a model by changing their color but, even after I save when I re-open the model the changes are lost. The models are in a toolbox that I made so I thought ArcGIS would be able to save any changes made to them.
ArcGIS 10 / Win7
EDIT-----
ArcGIS 10.2 / Win7
No change, if you change the Display Properties of the element like Color and save the model the color is not saved and you get the default colors when re-opening the model. Though it seems you can change the shape, and this property seems to hold.
Currently experiencing this issue in 10.4.1. Did you ever discover a resolution? A bit frustrating as this feature makes a model much more user friendly if it worked - surprised this goes this far back. I don't see the point of display property functionality if this isn't being addressed.