[Dave Loudin]

Yes, the color at the right side will change quite a bit once the path is far enough to be shadowed by something. That helps you to see why your prediction comes out the way it did, and helps you guage how much height you would have to add to change things. (Remember, the vertical scale is not the same between two profiles.) The two examples you offer above show pretty uniform signal top-to-bottom in the second case, and some mild scattering in the first case. Don't forget that your antenna is very close to the grey ground at the right end.

Yes, the color scheme between maps and charts is not the same. The map's coloring is analagous to temperature (hotter equals red, eh?) while the chart's scheme is a stoplight format.