Matt, I love this kind of stuff, but I have a hard time believing that the weathered part of the door in #3 is that blue. There'd certainly be some blue reflected from the blue sky, but wasn't the color actually more like this?
Click to view attachmentNow the green lichen on the weathered wood begins to show as green. You may not have intended the shot to be realistic. If not, I apologize.
#2 sure makes it clear that someone needs to get busy chinking that cabin before winter sets in.