Color Accent

My camera has a 'Color Accent' setting which looks like it will be fun to play with. Most post processing software allows you to do the same thing. The idea here is to take a 'black and white' photo with a single color selected to sand out. I'll surely be playing with this a lot more.

Obviously, I chose the red barn doors in one shot. I'm not sure what the target was in the second, but i think it was the snow or sky?????