I currently have a range of values where the center of the graph represents the ideal value, and the further you get away from the center the worse your value is. In this current wireframe, you can see that the green is good, orange is ok, red is bad.
When the graph crosses over from one color to another, the user will get a notification letting them know about the value change. If the user creates a custom range to get a notification (i.e. they select a range of 75-90), how can I visualize the custom value on the graph? I tried to "highlight" the custom range, but I feel that it would be difficult to see on a small screen (the graph takes up the horizontal space of a screen and is not very tell vertically)
Is there a clearer way to visualize the custom range on the default range values?