JC, I like your current door, and think it fits well with the style of the house. For that style of door, it should be stained wood color. What I don't like about it is the easily-breakable glass. Security is a big issue around here (inner city Houston), and I have no glass anywhere where a person could walk up and break it.
The six-panel door is too plain. If you choose that one, get a style with a fan-shaped window in the top, or some other element to let in some light.
Red is a GREAT front door color. Remember that to get red to work right, you have to prime the door in grey or brown first. Otherwise, the paint will be pink, no matter how many coats you put on.
But remember that with a glass storm door, you really can hardly see the front door at all.