I'd love to do this to the outer entrance of the enclosed porch/mudroom. Dutch door opening up with a screen door for the front door! In the winter a storm door could replace the screen door if done right.
A pop of color in the kitchen? Why not! Love that the island and screened door match and really pop in a sea of white cabinets - great way to bring in color without committing (you can always change the color and they're relatively small areas to paint!