Tom Silva has some advice for preventing heat damage caused by glass storm doors to existing exterior doors
Use this Andersen White Self-Storing Easy Install Storm Door for anytime ventilation and clear view.
Andersen 36 in. x 80 in. 3000 Series Terratone Right-Hand Self-Storing Easy Install Aluminum Storm Door with Nickel - The Home Depot
How to paint your front door metal framed storm door, Petticoat Junktion
Pella storm door -- this would look nice if it were white and had brushed silver hardware.
Maybe do something scroll/filigree. Love the stencil on the glass storm door:)