When cold coding this lesson before my students, I noticed it was very difficult to understand how to change the colors of the icons. First, you have to understand that the icons are somehow treated differently, and then you have to rely on the dropdown list in the coding environment to let you know there is such a property as icon color. It doesn’t show up as a property in design view and I can’t find it in the app lab documentation. But maybe I am not looking closely enough.
Additionally, ast least in text mode, the dropdowns for on event properties can be a little glitchy.
Maybe some extra “head-up” for teachers/students about this would be helpful? Again, maybe I am missing something but if I do, then my students will as well.